PC Demo
Mac Demo

PC System Requirements

These are the minimum system requirements for Bleed.
If you're in doubt, just try the demo first! You might find you can run it even if your system falls below these specs.

Mac System Requirements

Same goes for the Mac version. Try the demo if you're curious, it might work even if you don't meet the requirements!
For example, I know the game runs on OS X 10.6, but with some audio errors (eg. changing the volume doesn't work).