The listing, Orbit HD [Steam Key] has ended.
Embark on a journey through the depths of space, and uncover an ancient legend.
In Orbit, you play a small comet, hurtling between planets to a backdrop of procedurally generated nebulae and star clusters. A realistic gravity system is at the core, allowing players to have as much, or as little input as desired, watching while their comet flies into unpredictable new orbit patterns.
More info: http://store.steampowered.com/app/356380/
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This game works on mac too! Also includes steam trading cards
Good Luck!