I have ran alot of games with it so far. Most of them run perfectly. (Ape escape will not run though.) For some games you will need the bios for them to work. The sim bios works with some games just fine though.
I compiled a copy of ZSNES - the offical version doesn't work all to well, but the patched and updated versions based on it does compile and works pretty well. It's actually faster and more stable than the same Ubuntu version - makes you wonder how much of the Ubuntu core is causing the problems ^.^
I wonder if there is a way I can help generate packages for SliTaz based on the stuff I've compiled so far. Maybe I can help with development of the game emulators packages like Visualboy Advance, FCEUltra, ScummVM, Nestopia, Snes9x, etc. Would be good to see them.
Converting the .deb is easy and obviously it works . But didn't test some rom's yet.
The problem with psx games is that there are too heavy to be "fast-download-click-and-test" like a rapid arcade game ... And too old to compete with recent installable pc games ... :/
But for sure, if one search to play only on Slitaz, emulators should be the solution