
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!

Complete the first level.

Defeat 1000 aliens.

Complete any level on unstoppable difficulty.

Get 8 upgrade tokens.

Meet Sereia.

Meet the Radiant Beem.

Get all the performance medals in one level in a single try.

Complete a level using only one satellite type.
Minimum OS *: Windows® XP SP3 / Windows® Vista / Windows® 7 Processor: Intel® Pentium® 4 (2Ghz) or AMD® Athlon 64 (1.6GHz) processor or better Memory: 1GB RAM Hard Disk Space: 2GB free Video Card: NVIDIA 6600 or ATI X700, 256MB GPU memory or better DirectX®: DirectX® 9 or later Sound: DirectX compatible sound card
Minimum This is a 32-bit app. It is not compatible with MacOS Catalina (10.15) or other 64-bit versions of MacOS. Please see this Steam support article for more information. OS: OS X version Leopard 10.5.8, Snow Leopard 10.6.3, or later. Processor: 2.0 GHz Intel Core 2 Duo Memory: 1GB RAM Hard Disk Space: 2GB free Video Card: NVIDIA Geforce 9400M