These are really, really cool if you're into cheating. They're MacsBug macros that allow you to give yourself unlimited health, ammo, weapons, oxygen... all from within M2, without needing to edit a saved game. (Ever wanted to waste those first 8 bobs with a spanker blast? Now you can!) Comes in two flavors, 68K and PPC. The 68K ones are a piece of cake to install-create the proper folder (if it doesn't already exist), drop in the macros, and reboot. The PPC version actually requires a bit of work, but there are step-by-step, very explicit instructions to guide you. If you're not afraid of your debugger, these are wonderful. (Requires MacsBug, available at various Apple ftp sites.)