Screeps: World
Image source: Steam store page
A massively multiplayer strategy game set in a persistent world, where colonies keep running day and night.
How you code
You control your colony entirely with JavaScript that runs on the game servers around the clock, within a limited CPU budget each game tick. Your code harvests resources, spawns and directs units, builds and defends territory. You improve the code over time while it keeps playing for you.
Details
Categories: Competitive bot programming
Platforms: Browser, Windows, macOS, Linux
Cost: Paid
Language: JavaScript
Optional paid CPU unlocks for the official server.
Last verified: 2026-10-08