The Arcade
Learning disguised as procrastination. 17 games, all free, all in your browser. Play enough and the glossary starts making sense on its own.
3D games
Full 3D worlds that run in your browser. Each one loads its own game files, so give it a moment on the first start.
MZERO_05Mission ZeroThe 3D launch sim. Fly the enormous rocket from ignition to the tower catch, survive flight school, and clear all eight stages.8 stagesPLAY ▸
KERB_06KERBA 3D skateboarding game in a fictional London district at golden hour. Flip, grab and grind from the Thames to the rooftops.6 areasPLAY ▸Written by AI models
Every line of game code in these eleven came from an AI model. We gave each one the brief and published what it built.
Four games Pareto wrote as Union Alpha
On 16 September 2026 OpenRouter listed an anonymous model, stealth/union-alpha. We named it as Pareto the next morning, and its operator confirmed it that night: Pareto 26.9, from Circuit and Chisel. We asked it to build playable games while it ran under the codename, and every line of game code in these four came back from that endpoint. See how they were made.
SLICE_A1True SliceDrag a blade through a melon and the shape is really cut. The pieces keep falling, and the area is conserved.Play ▸
RIND_A3Rind RunnerAn endless roll in three dimensions. Steer the crates, take the jumps, watch the rind crack.Play ▸
SEED_A4Seed SpitAn artillery duel with seeds, over terrain that tears open where the shot lands.Play ▸
PATCH_A5Melon PatchPlant, water and harvest against the clock, with the weather and the pests on their own schedule.Play ▸Two games by Space Bunny Alpha, which we think is MiniMax M3.1 Flash
On 23 September 2026 OpenRouter listed an anonymous model, stealth/space-bunny-alpha. Its token counts match MiniMax's on all 50 of our fingerprint strings, and four days later MiniMax launched M3.1 Flash Preview on MiniMax Code with the same shape: a 1M-token context and text, image and video input. We asked it for a tabletop model railway and a Cuphead-style boss fight, and every line of game code in both came back from that endpoint.
RAIL_B1Willow Vale RailwayFour trains share a village railway on a table, with a flyover, a spiral and four bridges. Take any one, switch the points, and ride in the chase camera from noon to night.Play ▸
MOON_B2Moonstruck MayhemA Cuphead-style boss fight on the Moon. Jump, dash and parry through Baron von Brie's three phases, and save up for a Super.Play ▸Four games Pareto 26.9 wrote
Pareto 26.9 is the blended model Unbiased sells. We gave it each game as a brief and a run of short passes: Paris cost $16.78 of model calls, Manhattan $35.23 and Paper Round $12.15, with a final round of Paper Round fixes made by hand. Trafalgar Square was built the same way in a separate session. Each one is a full 3D or drawn world, so give it a moment on the first start.The films, the play links and what each build cost.
PARIS_P1Eiffel Tower zombiesA zombie shooter under the Eiffel Tower at golden hour: sprinting runners in waves of 22, headshots, and the Champ de Mars to hold.Play ▸
NOCT_P2NocturneA night street race through ten corners of downtown Manhattan in the rain, wheel to wheel with three rivals. Drive it yourself or watch the cinematic lap.Play ▸
ROUND_P3Paper RoundA dawn paper round down one British street. Aim for the front door, hop the hazards, and mind the cat.Play ▸
BUS_P4Catch the night busThe police are after you. Get across Trafalgar Square to the last bus in 60 seconds, and use the shotgun to keep them off you.Play ▸Island Orchestra by Claude Sonnet 5.5
Conduct thirty players on a sunset island while a boat circles the water. Meet each beam in time to keep the music steady, or explore the instruments up close. The one-minute score is an original arrangement in the manner of Tchaikovsky.
Quick games
Two quizzes, a memory game and Snake. A round takes a few minutes, and your best score stays on this device.
Scores and badges live in your browser only, and nothing leaves this device.
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