Unciv

Unciv is an open-source Civ V-inspired 4X strategy game delivered as a Chrome extension. If you’re after high-resolution graphics and cinematic production values, Firaxis’s Civilization V remains the reference. But if you want a small, fast, moddable, FOSS 4X that can run on a potato PC, you’ve come to the right place.

As a community-driven project, Unciv emphasizes openness and customization through mods and open-source code, delivering a deep strategic experience without vendor lock-in.