The full catalog

Write Lua to procedurally recreate a target 3D voxel object using as little code as possible.

Program corporate robots in a tongue-in-cheek assembly to run a dystopian megacorp’s operations.

Write Rust to pilot a fleet of spaceships through combat scenarios and climb the tournament leaderboard.

Build a web server that controls a snake, then battle other developers’ snakes in a multiplayer arena.

Write CSS flexbox properties to guide frogs onto their lily pads — the canonical way to finally understand flexbox.

Solve a murder by querying a city’s database — interrogate tables, follow leads and write the JOIN that names the killer.

The same JavaScript brain, distilled into discrete PvP matches — write the AI, drop it in the arena, and let it fight.

Synthesise molecules on a low-level machine in a bleak Romanian apartment. A lean, cheap successor to SpaceChem.

Build a robot tank, code its brain in Java or .NET, and drop it into the arena. The classic that taught a generation to program by battling bots.