I'm a ds owner. new to ufo2000. dev for ds is very simple. it's all easy to do with flash carts and the right software sdk. in fact a supercard 1 sells in stores for < 70$ and it's plug and play basicly. just drag your homebrew app into a microflash, pop that in your ds1 card and put the ds1 in the ds. its got a menu for switching between games... they have sangband and scummvm and doom2 ports allready last time i checked about a year ago. as for online, it was still being figured out by the homebrewers last time i looked. they have a browser that works now and a linux port. and i think they had afew games that could be played wireless between two ds. besides, hotseat mode would work just fine with such a small device to toss around. ;P