Cross platform via wine (Score 5, Informative)

Limbo on Linux is a wine bottle that runs with very poor performance. Trying to improve performance via the latest version of wine exposes a recent bug (shader model 3.0). Psychonauts on Linux is a real icculus port, but is just a wine bottle on Mac.

Don't consider wine compatibility as the type of support for Mac/Linux that I expected from the Humble Indie Bundle.