Hah! That's my repo! Also, the only emulator for anything written in Io, as far as I know :p Not that it was good, mind you. But I do highly recommend DCPU-1

Hah! That's my repo! Also, the only emulator for anything written in Io, as far as I know :p Not that it was good, mind you. But I do highly recommend DCPU-16 as an emulation launching point. It's a really easy to understand system :)