Light of Altair is an indie game (by a fellow developer I know and his brother) which fans of Immortal Defense may enjoy. It plays much like Sid Meier's game Civilization, except it's in space and you can colonize planets and asteroids across solar systems. It's also fun zooming in and out just watching the solar systems do their things: planets and asteroid belts moving by as you watch. It's very pretty, and rotating around the worlds and just looking at stuff was my favorite part. I had a lot of fun playing through it. Go check it out if you have some time.
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