Games like Screeps: World

Screeps: World is an open source MMO strategy sandbox game for programming enthusiasts. You control your colony by writing JavaScript code that operates 24/7 in the huge persistent online open world.

Screeps: World is an open source MMO strategy sandbox game for programming enthusiasts. You control your colony by writing JavaScript code that operates 24/7 in the huge persistent online open world.
Picked to match Screeps: World on gameplay, themes, and feel.