Moving mouse in Penumbra in OSX - can't

[Mudbill]

The games are old and your OS is new. There are bound to be incompatibilities/issues. Admittedly, FG has not been very active around here lately, but considering how old the games are, I wouldn't be surprised if they were unsupported by now.

PS: I just tested it myself and Penumbra Overture works fine for me without any mouse issues on OS X 10.8. Most likely the issue is the newer OS and the fact that the game was never updated to support it. I'm using a USB mouse though, so I guess it's worth checking that it's not the Apple Magic Mouse that is the problem, if you're using that?