The system requirements for Fragmented Galaxy, as it exists today, have been posted to the Fragmented Galaxy page. Here they are:
- OS: Windows 7+, Mac OS X 10.6+, Ubuntu 10.10+
- Disk: 150 MB
- Graphics: DirectX 11 (PC), OpenGL 3 (Mac/Linux)
- CPU: SSE2+
- RAM: 2GB
These are the most basic requirements to get the game to launch. I can't provide any recommended specifications but any system from the last few years should suffice, with various levels of play-ability.