i dont know much about this, but there is a adventure game maker (link: http://www.adventuregamestudio.co.uk/) called adventure game studio. there have been a few cool games made with this.
just wondering if their is a way to port all these games similar to scummvm, or would each game have to be ported seperatly by whoever compiled the game in the first place?
Sorry This would have been cool, but it's clearly impossible- unless you can persaude the author(s) that a GP2X port of the AGS interpreter is a good idea. There is already a Linux port on their page, but of course it may be a big leap to go from their current code to GP2X compatible code- it depends on how much platform specific code they use (i.e. assembly).
Oh and most of the games I saw listed on the AGS site had fairly high resolutions (compared to 320*240). Of course there's always the scaler, but then the games *might *look fair shocking scaled down... (especially ones using small fonts)