Hey I stumbled across a great free rogue-like rpg called NetHack. I absolutely love it. the website is
www.nethack.org
It plays on a wide variety of systems including PPC.
Its got ASCII based graphics, which adds to the greatness imo, and huge gameplay. Its like the old old old classic Rogue but 1000+ times more to do, wow.
I've only played the windows version, but im gona install to my axim in a bit. I'll post my success/failure.