it should work on all systems I guess, I tried it on
i3 win7
4GB RAM
Nvidia GT 550
and it worked fine on low settings and low res, with an average of 30 FPS :D
just make sure to change the screen mode in the settings to " Fullscreen " or " Windowed ", don't use " Exclusive Fullscreen " because it will cause you alot of lag even in lowest settings and resolutions