Space Colony is a PC strategy game developed by Firefly Studios and published by Gathering in 2003. Aspyr Media released a Mac OS X port in 2004. The basic premise is similar to The Sims in that the player has to care for the needs of a several individuals - here each with a unique personality and different abilities. However the game is mission orientated and involves setting up a futuristic base and carrying out missions which involve mining minerals, developing relationships, harvesting resources to prevent running out of oxygen, power, collecting food, and fighting back alien attacks.
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A good game, not exactly one which I would play for weeks but used to play it a few days, It has good strategy imo and was fun to play, until you get bored..