I have thought about MMO's and as far as I have been told, they are strictly not possible. The PSP cannot handle thousands of people online at the same time, not even a Runescape like game. However, there is that one RPG online, 4 players a server. Untold Legends 2, I hated it but meh.
I am a serious fan of RPG's, MMO's, and all of that. I have been wanting a massive online RPG for a handheld for a long while. I just don't think that it can happen. Sadly enough, however I do know this.. Someone is working on an RPG that I was apart of for a while, soon left the dev team. It's a PSP Java browser rpg, I was told it held 200 people at once. You can check it out at the Sony forums, not sure if its released even in beta form yet.
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