About Screeps

Screeps means "scripting creeps." You use real JavaScript to script behavior of your units, or creeps. The Screeps franchise is aimed at programming enthusiasts and consists of two games: World and Arena.

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• You play by writing JavaScript AI which controls your units 24/7 even while you're offline.
  
• Units of all players coexist in the same real-time huge persistent world and obey the same rules.
  
• Many kinds of units, base building, mining resources, territory control, economy, manufacturing, transporting, logistics, trading—all the attributes of a real strategy game which you need to program!
  
• The better your scripts, the better your game—irrespective of the time played. Your creeps will mine, build, defend, and conquer as you just work, sleep, or walk your dog.
  
• Only basic programming skills are required. However, if you are a pro developer, now is the chance to put your skills to the limit!
  
• Edit your scripts from the in-game editor, or using your favorite external IDE.
  
• Other languages are supported via WebAssembly: C/C++, Rust, TypeScript, Go, C#, F#, Kotlin, Swift, D, Pascal, Zig, the list is growing.
  
• Permanent MMO access with 20 CPU limit included in the starter package. Unlock your full CPU in your account on the official server by purchasing a Lifetime CPU unlock or an in-game CPU Unlock consumable item (can be bought by in-game credits).
  
• If you don't want to buy an unlock, that's fine—there is a standalone CPU-limited world shard where you can compete with other "CPU-locked" players on equal terms.
  
• Host your own server, modify games rules and play with your friends via LAN or on the Internet. The server is an open source project.
  
• The game is slow-paced (from 2 seconds to 5 seconds per game tick depending on a world shard where you start playing), since it allows you to debug your scripts in the real-time world. You can use your private server to develop and test with fast pace (up to 10 game ticks per second).