There is a BeOS port of the Eraser Bot based on the final version 1.10 code for Ridah's Quake II artificial intelligence playmate. The Beraser, as it were, requires BeOS R4.5 and is x86 only. The author is also currently working on an IRIX port of version 1.10 (a port of version 1.01 is available), more info on that can be found here. Thanks Bot Epidemic.