Sonic Cafe is Sega's mobile phone games service in Japan. For a fee of ¥315 a month (after tax), the user gets access to the entire library of currently available games, to download as many times as they want. The service is available on NTT DoCoMo's i-appli phones.
The service is only available in Japan and is not expected to become available elsewhere.
The list of available games is relatively large, with a number of ports of classic games (such as Sonic the Hedgehog for the Mega Drive), along with several new ones. The list below contains only the Sonic related games that have been released.