StarForge is described as 'Game about gathering resources, building bases, crafting anything you want, and surviving on an alien planet. Earth's star is dying and humanity transferred as much technology and resources as possible and left on a one way mission to populate another planet' and is a Sandbox Game in the games category. There are more than 10 games similar to StarForge for a variety of platforms, including Windows, Steam, Android, Mac and iPad apps. The best StarForge alternative is Minecraft. It's not free, so if you're looking for a free alternative, you could try Voxelands or Mine Blocks. Other StarForge like games are Terraria, Garry's Mod, Space Engineers and Creativerse: The Definitive Edition.