CPU: 1.0GHz SSE2 compatible or higher... Intel Pentium4/Atom/Core/Xeon or AMD Athlon64/Sempron/Opteron/Phenom/FX
RAM: At least 128MB. With OS, 1GB
HDD: 150MB+
GPU: Any dedicated video card/onboard chip from AMD/nVidia/Intel/... that supports at least OpenGL 2.1 with 32MB VRAM or higher
SND: The game uses libsndfile and OpenAL over SFML, this means if you can generally hear sound on your computer, then it should work with this game too.
NET: At least a 56k modem, ISDN would already be good enough to play. For updating the game we recommend at least 1mbps.