It's not civilization, it's similar but it's its own game. Simple, creative mechanics, story and gameplay. Good while we wait for Beyond Earth.

Highlighted for being one of steams first green lit games. Simple, fast paced point and click puzzler. No logic or sanity to it, just click and laugh.

Hardcore survival sandbox. Mods and adjustable mechanics for infinite play styles. Long running game, affordable and a great deal of personality.

Sandbox in space. Amazing unique ship mechanics for building, operating, and crashing them into things. Modding enabled, good creativity and simulator

Endless sandbox, infinit versitility, gamemodes and styles. Create, Destroy, Screw around, have fun. Depends on public for good games.

City management sandbox. Nice style, simple mechanics, easy to learn but tough to master. Disasters keep late game from being to reptative.

Sandbox, rusty/gritty realism survival. Very hostile, you & friends vs the world. Good devs, unique ideas. Some modding, varying game-play types.

Sandbox city manager loosly resembling Dwarf Fortress. Much easier to get into without sacrificing much depth. Dedicated developer and good community.

Years in the making, a feudal style sandbox with adjustable core mechanics and emphases on team play. Unique plans for combat, crafting and building.