CHANGELOG

Cycle-2 ship of Terracotta Courier — magnum-opus tier (drops -slice). 8 screens across 2 zones with run + jump + dash + double-jump. Sunset-clock palette progression within warm register. Save persistence. Dynamic misregistration. Patroller pigeon retune. Narrative bookend on screen 8. THESIS: VALIDATED — first 4-session MO game to ship cycles 1+2 cleanly with zero IMMUTABLE drift; first MO cycle-2 ship with 0 iterations within session 4.

A precision sidescroller about reading rooftops at a glance and chaining four perfectly-tuned verbs across a sun-baked seaside town at golden hour. Cycle 1 ships 4 hand-tuned screens (intro / gap-tutorial / dash-introduction / finisher) in 1 zone, with run + jump (variable + coyote + buffer) + dash (8-dir, ground-refresh). Failure is instant respawn at last checkpoint, no penalty. Cycle 2 (deferred) adds double-jump.

Cycle 2 of the magnum-opus Frozen Cathedral — Pin & Reach promotes from `magnum-opus-slice` to `magnum-opus` (drops the `-slice` qualifier). Zone 2 "The Cliff Above" adds 4 mixed-width segments (320/320/640/480 px) and the two cycle-1-IMMUTABLE-locked verbs ship: place-piton (P key, pinned-only, permanent grip; 0.05 stamina cost) and rope-swing (hold-dir + Space, 750 ms easeInOutSine pendulum arc; 1.5× normal-reach stamina cost). Camera horizontal-follow extension engages at width > 320 px with deadzone±16, lookahead 32 px, smoothing 0.18, level-clamp; cycle-1 zone-1 stay-centered behavior preserved bit-identical at width = 320 px. Save persistence v0.5 via localStorage. Falsifiability hypothesis structurally encoded in level data: Z2-S2 has a deliberate 41.76 px gap > 40 px reach radius bridgeable only via piton at exactly 40+40 px; Z2-S3 has a 220.69 px horizontal void (rope-swing only); Z2-S4 has two cycle-2-required gaps. **THESIS: VALIDATED.** All 14 IMMUTABLE clauses CONFIRMED (camera extended per RATIFIED cycle-2 mechanism — IMMUTABLE itself byte-identical to cycle-1 ship b43066b6). All 5 cycle-1 IFC bullets CONFIRMED-WELL with zero regression; both 2 cycle-2 IFC bullets CONFIRMED-WELL. **ENGINE ACCRETION: 218 lines** graduated from `games/pin-and-reach/game.html` into `engines/vertical-climb-engine.html` (1766 → 1984, +12.3%). HYBRID order: Phase 1 BEFORE P4.2 (+191 lines: buildLinearSegment + buildDecorTiles + wind-timeline format docs + pinnedTone audibility-chain pattern); Phase 2 AFTER P4.10 (+27 lines: renderRefractionTrace 2 px polish + alpha sampler).

A solo climber scales the inside of a frozen waterfall — a cathedral of suspended ice arrested mid-pour — by committing to one deliberate grip at a time. Stamina drains while held, chalk is finite, and the wind decides whether you pin or you fall. Magnum-opus-slice (cycle 1) — 1 zone × 4 vertical segments, 4 cycle-1 verbs (reach, pin, chalk, down-climb), with cycle-2 verbs (place-piton, rope-swing) pre-locked in IMMUTABLE. First vertical-climb engine lineage in studio history (1766-line engine seed forking the base-game chassis with an inverted verb model — discrete grip-to-grip, no jump arc). Stained-glass + vector-cool aesthetic; a single hot orange parka against a cold cobalt-violet world.

Cycle 2 of the magnum-opus Drowned Archive — the librarian-creature continues the descent into the Lower Archive (Banister / Cold Reading-Room / Atrium / Memory-Index). New verbs paired: wall-cling (vy clamp 30 px/s slow-slide as forgiveness) + wall-jump (kick away from wall). New palette token accent-3 cold-violet (#8878c0) for the memory-fragment accent — geometry the player has been rim-light-shown previously gradually tints itself, closing the skilled-tier mastery fantasy "becoming a library yourself." THESIS: VALIDATED — cycle-1 IMMUTABLE byte-identical, all 5 cycle-1 Identity Feel bullets re-CONFIRMED, zone-1 levels remain solvable with cycle-1 verbs only.

Celeste-tier precision-descent platformer in a pure oceanic abyss. A small bioluminescent librarian-creature falls deeper into a drowned archive, navigating only by a passive radial lantern that shrinks with depth. Bioluminescent archivist-fauna pass behind the level plane and rim-light distant geometry for ~300 ms — the player's only previews of what's ahead. The mastery fantasy is "becoming a library yourself" by memorizing fragments fauna repeatedly rim-light.

Cycle 2 of compass-apprentice — un-sliced magnum-opus build. Adds DASH verb (Z/X, 280px/s × 0.18s), horizontal-grammar zone 2 (lateral pilgrimage across the orrery's outer rings), multi-pedestal alignment finisher (3 pedestals, any-order, 0.6s hold), tide-pressure tempo modulation (60→72 BPM with phase-continuity invariant), and save persistence. Cycle-1 surface preserved byte-identical.

A vertical-climb precision platformer set inside an enormous brass orrery in a 19th-century observatory tower. The apprentice ascends the clockwork, using an inherited gear-key to briefly hush the spinning machinery — letting them slip past swinging counterweights, moving copper platforms, and patrolling clockwork patrollers — until they reach the armillary summit and align the rings. Studio's 2nd magnum-opus game (cycle 1 of 2 — vertical slice).

Cycle 2 of the studio's first magnum-opus game — the first cycle-2 build in studio history. Grew the cycle-1 4-screen vertical slice into a full 8-screen / 2-zone game without breaking it. Added two new player verbs (dash and wall-jump, both physically gated to zone 2 via `screen.zone === 2`), one new zone ("The Clearing") with four hand-tuned screens of escalating verb requirements, sunrise visual progression (per-screen sky-band tint shift from `#251a32 → #6b3340`, NOT a countdown timer — preserving the gentle-teacher tone), and a watchtower scale curve fix (8-step `0.12 → 0.90`) carrying the diegetic forward-motion beat across the doubled journey. Magnum-opus THESIS: VALIDATED — CONTRACT.md byte-diff vs cycle-1 SHA `6cb63ef` returned empty body, all 7 cycle-1 IMMUTABLE fields CONFIRMED, all 7 Identity Feel bullets CONFIRMED. Engine accretion: 5 candidates graduated (+176 lines, 3% engine-seed delta).

A Celeste-style precision platformer about carrying a single fragile ember through a predawn watercolor forest to a distant watchtower. The ember is the player's heart — visible at all times, pulsing with the player's breath, extinguished by panic. There is no health bar, no game-over screen — only the quality of your inputs. Hard landings extinguish the flame; the screen restarts gently, no apology. The studio's first magnum-opus pipeline game, built across two ~2h sessions (cycle 1, vertical slice).

A top-down combat-survival arena where five cars are locked inside a walled coliseum oval, the inner fence is a damaging electric ring, and the only way out is to be the last car running. Forward machine gun, rear-drop mines, no laps, no clock — just the hunt.

A 2D top-down Newtonian space shooter where momentum is the entire skill. The void streams endlessly around your camera, enemies coast in patterns instead of chasing, and your job is to read your own drift three seconds into the future and shoot through it. Thrust is precious — audible, overheating, committed — and most kills should be made with the engine cold.

A meditative top-down nautical puzzle in which the player rotates a lighthouse beam through fog. Ships are visible only inside the beam's cone — and they move only when outside it. The player conducts a small fleet of ships home each night by sweeping carefully, memorising drift patterns from a single lit frame, and trusting what they can no longer see. Five nights of rising fog density and ship counts form a short career arc.

Conduit is a turn-based deckbuilder where every card is a single note and every play is a syllable in a phrase. The player descends through a silent cathedral, fighting warped fragments of liturgy by composing chord progressions from their hand — recognized progressions (I-IV-V, ii-V-I, V-I, etc.) chain damage and restore the cathedral's silenced hymn for a moment, while broken or off-key plays fizzle and stall the phrase.

A meditative restoration puzzle inside a silent clock-tower. Drag five part types — master gear, transfer gear, hammer, bell, bellows-reed — onto an 8x8 workbench, press SPACE to run a tick-quantized contraption, and listen for the master's score. Each restored floor joins a tower-mix bus that hums beneath the next build, so by floor 5 you are conducting four voices on top of three already-restored floors. Signature solve: clack into 250ms silence, then a harmonic-overtone wash fades in over 800ms while the contraption plays two free bars underneath. The machine doesn't play the music — the machine IS the music.

A KAZ-inspired turn-based arcade roguelite where the 5×5 grid is a tuned percussion instrument. Each cell has a fixed pentatonic pitch — bashing enemies plays the cell's tone, chains compose melodic phrases, and round-end resolves to a deliberate V→I cadence chord. Between rounds, the player drafts items / maluses / spells from a 4-archetype pool (Harmonic, Rhythmic, Chain-Extender, Dissonant) — the build determines what kind of musician you become. Round 10 boss = signature playback of the round's bash sequence as a composed phrase.

Tactical roguelite on bone dice in The Gambler's Crypt. Each turn you roll 5 dice and assign their faces (1=Move, 2=Block, 3=Block+Attack, 4=Attack, 5=Charge, 6=Wild) across three parallel room-fights. Two re-rolls per turn. The Hook: re-rolling a bad hand into exactly what you needed, signalled by a clarion bell (820Hz, 1.4s ring-out) and a gold bloom on the die face — the one sacred palette break in an otherwise candle-and-stone world. Click-select baseline, 3 floors, Rusher/Caster/Shielder archetypes with telegraphed intents, Tomb Warden boss on floor 3, bone-ivory dice with ink pips on riveted stone doorframes, continuous charge hum, rhythmic breath ambient, localStorage for deepest floor reached.

Tetris, but the floor is flooding. Pieces fall from above; a waterline rises from below on a tide clock. Every line you clear pumps the waterline down — clears are physically draining the compartment. Cells that the water engulfs flip to drowned blocks and rise one row per tide tick alongside the waterline; they stay clearable but force the stack upward from underneath. Dual lose state: stack the ceiling OR let the water reach it. Industrial submarine vocabulary: riveted steel, brass gauges, bulkhead CLUNK, three-tier alarm escalation (silence → 800Hz whisper → 1200Hz crisis), pressure hum drone tracking waterline height.

A side-scrolling arcade mining game where you pilot a drill pod through a procedural tile grid, striking rich while a geothermal pressure gauge ticks up with every meter of depth. Dig, hoard cargo, and surface before the earth buries you — one tight 10-15 minute session with a real ending. 9-state machine, destructible tile grid with 7 tile types (dirt, stone, bedrock, lava, gas, 6 mineral tiers, Mother Lode), 4 upgrade tracks × 5 tiers (fuel tank, hull, drill, cargo), fuel/hull/cargo/pressure resource model with depth-scaled pressure tick, identity mechanic pressure gauge with warning vignette, CLEAN RUN signature moment (slow-mo + major chord) on high-pressure high-cargo surface, procedural Web Audio for every event, Consortium-survey grim-industrial visual identity with CRT bezel and geological strata banding.

A cursed island action-adventure where skeletal sentinels migrate with the tide. 5 overworld zones + 3 crypt rooms (tilemap-based, screen transitions), 3-phase tide cycle (LOW/MID/HIGH, sinusoidal ~90s period) that floods tiles, migrates sentinels, and spawns drowned risen, 13 overworld skeletal sentinels with per-phase migration positions and bone-dust particle trails, real-time combat (attack, dodge roll with i-frames, 5HP health system), 2-phase Shepherd boss fight (Bone Sweep arc + Sentinel Call then Faster Sweeps + Tide Surge arena flooding), continuous tidal drone (55Hz-95Hz), full signature moment with slow-mo, fracture lines, silence hold, beacon materialization, signal fire escape sequence, permadeath with clean state reset.

A contemplative physics puzzle game where you place gravity wells to sculpt invisible forces that guide a stranded astronaut to an exit hatch. Each solution traces a unique curved trajectory through space — trail lines as calligraphy. 10-level physics puzzle with click-to-place gravity wells (2-5 per level) on a 20px grid, inverse-square gravity simulation at 240Hz substeps, dual-layer trail rendering (3px gold core + 8px glow), harmonic well hum audio system (5 wells tuned to consonant intervals), time control slider (0.25x-3x), 3-star rating per level with localStorage persistence, level select with sequential unlock.

A rhythm game on a honeycomb grid where tapping illuminated hexagons in time builds a layered electronic track from silence. Every correct chain adds a musical layer; every miss strips one back. The music IS the game. 19-hex pointy-top honeycomb grid, beat clock driven by AudioContext.currentTime, 5 procedural audio layers (kick, bass, arpeggio, lead, pad), timing windows (Perfect ±50ms, Good ±120ms) with EARLY/LATE feedback, chain length scaling 3-8 tiles, 3-minute song structure (360 beats at 120 BPM, 6 sections), dark neon arcade aesthetic with CRT scanline overlay.

Classic snake where every food pickup triggers a random time-limited mutation — reversed controls, speed boost, phasing through self, toxic trails, mirrored controls, or shrinking body. Mutations stack when you eat fast enough, creating compounding chaos and escalating score multipliers. 6 mutation types with independent timers, mutation stacking with score multiplier (1x base + 1x per active mutation), phosphor CRT visual identity, 21 procedural SFX, background heartbeat pulse that scales BPM with active mutations.

A tower defense game framed as building a precision killing machine. Place mechanical towers that fire in coordinated rhythms along a fixed path, upgrade them to tighten the pattern, and watch your clockwork defense dismantle waves of enemies with industrial elegance. 4 tower types (Gear, Piston, Sprocket, Tesla Coil) with 3 upgrade levels each, distinct percussive sounds at separated frequency bands (1200Hz/80Hz/150Hz/2000-4000Hz) creating emergent polyrhythmic soundscape. 3 enemy types + bosses, 20 waves, constrained economy with no tower selling, industrial/mechanical aesthetic with dark steel-grey and warm brass/copper accents.

A top-down drift racer where drifting is the economic engine of speed. Slide through corners to charge your turbo meter, then punch the boost on straights to blow past AI opponents. Spin out and you lose your charge. Tiny cars, tight curated tracks, smoke trails that prove you earned every inch. 5 tracks from easy sweepers to technical hairpins, 3 AI opponents with difficulty scaling, Quick Race and Championship modes.

A Frogger variant where you ferry cargo back and forth across an industrial canal that dies a little more with each crossing. The outbound trip is planning. The return trip is consequences. Every crossing poisons the river, and every return trip forces you through the wreckage you just made. Grid-based committed movement, 5 river lanes with sinking logs, 4 traffic lanes with vehicles, per-crossing timer that tightens with deliveries, bidirectional crossing state machine, pollution escalation system (log sink levels 0-3, water color shift, vehicle speed increase, timer tightening), committed hop animation with squash/stretch, procedural audio with industrial drone that thickens with pollution harmonics, ferryman aesthetic with industrial decay.

A horizontal-scrolling space shooter inspired by Gradius III, featuring the strategic power-up bar system where players collect capsules, cycle through upgrades (Speed Up, Weapon, Option, Shield), and choose when to cash in. Death strips all power-ups, creating a tense escalation-and-loss loop. 4-slot Gradius-style power-up bar, 5 enemy types (basic fighter, swooper, formation flyer, capsule carrier, turret), 3 boss encounters with 2 phases each (Vanguard, Leviathan, Rift Core), parallax starfield, CRT-era arcade glow aesthetic with neon projectiles, 18 procedural audio SFX + boss drone ambience, particle effects, screen shake, freeze frames, muzzle flash.

A Missile Command reimagining where six named cities with visible populations and dimming light become the emotional center. Three defense bases with limited ammo, click-to-target counter-missile system with nearest-base auto-selection, chain-explosion mechanic with escalating visual/audio feedback, wave progression with escalating difficulty, wave-end interstitial with casualty reports and population regeneration, city destruction fade-to-dark animation with mournful audio. Somber visual identity: dark indigo sky with procedural stars, warm amber city lights, harsh white explosions. 10 procedural audio effects via Web Audio API.

A brick-breaking arcade game where same-colored bricks detonate in chain reactions when adjacent bricks are destroyed. The classic Breakout grid becomes a puzzle to read: aim for the right brick, and a single hit cascades into a screen-clearing avalanche of destruction. BFS flood-fill chain reactions on same-colored adjacent bricks, escalating cascade audio (rising pitch per chain link, resolution chord on completion), crystalline 4-layer brick rendering, neon-on-dark Geometry Wars aesthetic, combo counter, exponential chain scoring, 5 levels with escalating difficulty, and a 250ms signature moment freeze on 6+ cascades.

A vertical falling shooter inspired by Downwell where every shot creates a shockwave on impact, pushing enemies and nudging platforms. The player descends an endless well, using their gun as a weapon, brake, and spatial reshaping tool. A sonar-pulse aesthetic ties the visual identity to the core mechanic: you see by shooting. Canvas-based vertical scroller with gravity-driven falling, downward shooting with recoil, shockwave system applying radial force to nearby entities on impact, sonar-pulse visuals (expanding cyan rings illuminate the dark well), two enemy types (Walkers and Flyers), stomp mechanic, rising ceiling forcing continuous descent, procedural well generation with difficulty scaling, full procedural audio (shot crack, sonar thump, stomp crunch, ambient rumble), and art-directed visual polish (chiseled well walls, multi-ring sonar pulses with birth flash, enemy silhouettes, CRT-style bezel).

A text-based survival journey through a hostile, unknowable world. The player moves forward one decision at a time — fight or flee, rest or press on, eat or save. Every step costs something. There is no going back. Death is frequent, fast, and instructive. A Souls game compressed into text. 19 data-driven encounters across 3 difficulty tiers, full procedural Web Audio API soundscape (breathing ambient drone, percussive combat, deliberate silence), typewriter text presentation, and a Signature Moment (The Hunter) that rewards mastery through death.

Faithful recreation of the 1976 Exidy Death Race with modern audiovisual feel. Drive a car across an open field, run over gremlins for points, and watch each kill become a permanent tombstone obstacle. The field fills with your own success until navigation becomes a white-knuckle threading act through a graveyard you built. Tank-style car with weight, momentum, and drag-based deceleration. Gremlins with random-walk AI and tombstone avoidance. Permanent tombstone placement at every kill location — the core self-sabotaging mechanic. Full procedural audio: engine drone with LFO pitch modulation, gremlin hit composite, tombstone collision crunch, graveyard atmosphere drone that builds with tombstone count. Monochrome bone-on-charcoal visual identity with CRT scanline overlay, vignette, and phosphor glow effects.

Faithful recreation of the 1979 Atari Lunar Lander with modern audiovisual feel. Rotational thrust control, procedurally generated terrain with landing pads of varying difficulty and score value, limited fuel, and physics-based descent. The silence-roar-silence audio axis and vector-modern aesthetic are the differentiators. Dual-layer bandpass filtered white noise thrust, crash impact with layered thud+noise+ring+sawtooth, landing chime, ambient hum, fuel warning beep, level advance arpeggio, high score fanfare. Two-tier star field, Kai Lund art direction with Courier New typography, green/cyan HUD hierarchy, lander glow, terrain fill, pad bracket markers.

A submarine survival horror game where sonar pulses are your only vision, every torpedo reveals your position to hunting destroyers, and the ocean is dark. Based on the 1976 Midway arcade game, reimagined as atmospheric survival where silence is your best weapon. Canvas-based survival with sonar-as-vision mechanics. Triple-pass sonar ring rendering with phosphor decay and 100ms echo hold. 11+ procedural audio functions including layered sonar ping with echo return, stereo-panned propeller wash, proximity-modulated depth charge rumble, and 45/47Hz ambient beat-frequency drone. Signature moment: destroyer kill triggers explosion-as-sonar-pulse illuminating nearby ships, with rising audio sting and drone dip. CRT-aesthetic visual treatment: scanlines, edge vignette, depth gradient, phosphor green palette.

A maze-chase journey through four distinct worlds inspired by Ms. Pac-Man (1982). Each maze has its own color palette (blues, ambers, purples, reds), audio mood, and ghost aggression profile. Semi-random ghost AI replaces deterministic targeting, making pattern memorization unreliable. Moving fruit bounces through corridors. Four structurally distinct 28x31 maze layouts with compacted string encoding. Per-maze visual identity and audio identity with shifting siren frequencies, waka-waka tones, and sound effect timbres. 12+ procedural audio effects via Web Audio API. Signature Moment on first Maze 4 clear: sustained four-tone chord, 40 multi-colored particles, double flash.

A recreation of the 1982 Williams arcade classic with a rising lava twist. Players ride a flying ostrich and defeat enemy knights by jousting from above. Each wave the lava rises, swallowing platforms from the bottom up, compressing the arena into a desperate knife-fight in the sky. Flap-to-fly physics with gravity, impulse, momentum, and drag. 3 enemy tiers (Bounder, Hunter, Shadow Lord). Egg mechanic: defeated knights drop eggs that hatch into tougher knights if not collected. Rising lava swallows platforms each wave, with platform re-emergence between waves. CRT-dark visual aesthetic with entity glow, lava underlight, and procedural audio including 14 sound effects and lava ambient drone.

A side-scrolling platformer where a squirrel races through an autumn forest collecting nuts before winter arrives. 10 short, fast levels (15-30 seconds each) that progressively strip the forest bare — trees lose leaves, gaps widen, wind pushes you sideways — turning a cozy autumn romp into a desperate survival scramble. Auto-running squirrel with variable-height jump physics, coyote time, jump buffer, and auto-hop at branch edges. Full seasonal visual progression from warm gold/orange to near-monochrome gray/white. Wind system starting at level 5 with visual telegraph streaks. 13+ procedural audio effects including ascending nut-pitch ladder and background drone shifting from 80Hz to 60Hz. Signature moment on level 10: slow-mo into hollow, victory chord, sleeping squirrel surrounded by nuts.

Tetris with cascade/chain reaction mechanics. When a line clears, individual blocks fall independently under gravity, potentially triggering additional line clears in chain reactions scored exponentially (2^(N-1) multiplier). All 7 standard tetrominoes with SRS-lite rotation and wall kicks, ghost piece, next piece preview, DAS/ARR for smooth movement. Dark modern arcade aesthetic with vivid saturated block colors, beveled rendering, motion trails on cascade blocks, and per-chain-depth chromatic glow. Direct restart from game over for zero-friction retry.

A faithful recreation of the 1979 Namco Galaxian arcade shooter with modern game feel and CRT arcade cabinet aesthetic. 38-enemy formation (2 Red Flagships, 16 Purple Guards, 20 Blue Drones) with idle sway animation, Bezier curve dive attack paths, flagship escort mechanic for bonus scoring (150/200/800 points), and a single-bullet-at-a-time constraint. CRT visual treatment with scanline overlay, phosphor bloom, vignette, and enhanced sprites. 12 procedural audio events including formation hum. The gap in existing browser Galaxian clones is not missing mechanics — it is missing feel.

Hill climb racing reimagined as a dolphin riding ocean waves. Physics-based momentum game where you ride a bezier-curve dolphin over procedurally generated waves, managing angle and energy to travel as far as possible. The dolphin flows with the water — it curves, arcs, and flexes with angular velocity. Momentum physics on procedural sine-wave terrain with landing quality tiers (clean/okay/bad), flip tricks, combo chains, and a sunset-over-ocean visual identity. The ocean is not hostile — energy management is the only constraint.

A classic Pac-Man arcade clone with faithful ghost AI personalities (Blinky direct chase, Pinky 4-ahead ambush, Inky Blinky-reference flanking, Clyde distance-threshold shy), procedural audio, and modern game-feel polish. Navigate the maze, eat all dots, avoid (or devour) ghosts, and clear levels for a high score. Neon arcade aesthetic with per-element glow effects. The soundscape communicates game state — rising siren as dots deplete, waka-waka rhythm, signature moment on the 4th ghost chain eat.

A vertical-scrolling shmup where your ship has mass. Thrust-based movement means every dodge is a commitment, every position earned through momentum. A shared energy resource powers both weapons and shield, creating continuous offense/defense tension. Cold industrial aesthetic — no background music, silence is the soundscape. 3 sectors, 14 waves, 3 bosses, and a signature moment of complete silence after the final kill.

A side-scrolling cave-flyer where a heavy military helicopter fights gravity through hostile underground caverns, destroying turrets and extracting hostages. Momentum physics make the helicopter feel like a real machine — thrust fights gravity, inertia fights precision. The rescue mechanic forces the player to become still in a game that punishes stillness. The rotor IS the music — no soundtrack, just a mechanical soundscape that shifts with every input.

A dark fantasy take on the Donkey Kong formula. A lone knight ascends a cursed tower, dodging flaming skulls and spectral hazards rolling down crumbling platforms, to free a captive chained at the summit. Classic arcade structure with modern game feel — weighty jumps, oppressive ambient drone, and a cathartic C-major victory chord. Each of the 3 levels has distinct platform geometry and escalating hazard difficulty.

A top-down action-adventure dungeon crawl inspired by The Legend of Zelda (1986). One complete dungeon experience: a small overworld hub leads into a 10-room dungeon with real-time sword combat, bomb puzzles, push-block mechanics, and a boss fight. NES-faithful pixel aesthetic with dark fantasy atmosphere. Enter, explore, solve, fight, claim the Triforce fragment.

A Wolfenstein 3D-style raycasting FPS in a single HTML file. First-person maze crawler through procedurally generated 16x16 dungeons using DDA raycasting, solid-color walls with distance fog fading to black, hitscan pistol combat against patrolling guards, key-locked doors, and 3 levels of escalating dread. Dark fantasy aesthetic with the Morten Mai palette — earth browns, stone greys, blood reds, muted gold HUD.

A zero-friction Sudoku puzzle with procedural audio feedback. Digits 1-9 mapped to a pentatonic scale, group completions trigger register-varied harmonic chords, and solving feels like finishing a piece of music. Warm-lamp-at-night aesthetic with pencil marks for Hard mode.

Tile-based RPG inspired by Ultima I: The First Age of Darkness. Procedurally generated 48x48 overworld with towns, dungeons, and fog of war. Turn-based bump-to-attack combat with 5 enemy types, 4-tier equipment, and XP/leveling. Collect three Gems of Power and storm Mondain's Dark Tower. Designed by Morten Mai persona.

Space Invaders with Claude Code terminal icons ("> _") as the invaders. Formation march with escalating tempo, segment-based shields that erode under fire, CRT phosphor-green aesthetic. The march beat IS the music — its tempo and sudden silence are the emotional arc.

Classic vector arcade shooter with Newtonian physics, screen wrapping, and wave escalation. Three asteroid sizes with split-on-hit behavior. Hyperspace teleport with 10% malfunction risk. Procedural audio: heartbeat bass pulse, thrust hiss, crunch cascade by size, ship death, wave fanfare.

Single-player browser Pong — player vs CPU with three difficulty tiers. Ball speed escalates +14 px/s per hit (280-560 px/s range), resetting on each point. Full juice: ball trail, paddle stretch, screen flash and shake on score. 9 procedural audio events.