I realise this is the "Flash" development thread, but i've been looking at the system and can't see any reason why Java Applet games can be used on it.
Obviouly these games would need to be edited to work with the system, but i'm fairly sure that because of the way the system is set-up it could very easily accept java games.
All we need now is to find some open source java games (they are all over the place, i'm almost sure of it) and someone that can edit them