Screeps: World is a unique MMO RTS game designed specifically for programmers. In this open persistent shared world, players utilize JavaScript to script the AI for their units, known as 'creeps,' which operate in real time. The game features a procedurally generated world comprising various rooms that players can compete to control. Players engage in resource mining, infrastructure development, and army command, all while their units continue to function even when they are offline.

This sandbox-style game encourages creativity and strategic thinking, as it lacks definitive goals, allowing players to explore various programming techniques. The JavaScript API enables extensive interaction with game objects, leading to a diverse range of strategies and outcomes. Screeps: World not only serves as an entertaining game but also as a platform for programmers to hone their skills in a collaborative environment.