Specs, OS, and other bits

[WindexGlow]

1: They are very likely to keep the trend of releasing on mac (and linux too, I believe)
2: I do not believe they have released the specs, but it will likely match those of Penumbra Black Plague.
3: Too lazy to do a google search - OnLive is that company that hosts teh game on their computers, and gives you a video link right? If so, very unlikely. This is a very small indie game, one that doesn't require a heavy computer to max out.