I just tried the keys from the Humble Bundle on the Ambrosia distributed versions, they don't work. :( If you are using Xcode 4, then here is a handy tip for restoring Universal Binaries to your build process. If you are still on Xcode 3, then all you need to do is change one variable in your build ...

I just got the Humble Introversion Bundle, but as it turns out the versions of Darwinia et al from it are Intel only. I was wondering if it is at all possible to reinstate PowerPC into your build system for the next update so I can play Darwinia, Multiwinia, DEFCON and Uplink?