Bluetooth, GSM, and Gameboy
brnsurgon1 writes ""The aim of the project was to investigate mobile gaming over GSM- and Bluetooth- networks, by developing a concept prototype, connecting a Gameboy to a mobile phone over Bluetooth. The results show that it is possible to connect two Gameboy Color over a GSM network by connecting to the phone using the Bluetooth plugin we developed for the Gameboy."" A couple other have submitted this story - it looks interesting. But, heck, I'm still trying to finish Golden Sun on my GBA.
It looks like some phone companies have decided to charge for GPRS access based on time, not on volume of traffic. This is not very wise, but that's a fact that some users have to live with. So for them, the costs of a game would probably be quite high.