Mobile card game service

This document summarizes an online and mobile multiplayer gambling game called SF-21. The game is a simplified version of blackjack that allows up to 3 players to play against each other on their mobile phones for real money. It is one of the first multiplayer mobile games that supports real money betting. The game can be played online through a GPRS connection or offline in single player mode against artificial intelligence. Funds can be deposited and withdrawn through various payment methods. The game is part of a larger gaming platform called SF-MGAME that supports additional gambling games and services for mobile users.