Bus Gamer, Imawa no Kuni no Alice (OVA) Recommendations
Probably the most similar anime you'll find. Both with only 3 episodes but leave quite an impact. Bus Gamer is also a survival game in which 3 participants must steal or protect a cd filled with information about a certain company. Unlike Alice, the parameters are clear and unchanging and the enemies are never more than three. Borderland Alice, on the order than, is a bit more ambiguous in both game and enemy because the rules and location are unknown to the players until just before the game and chances of friendly fire increase the body count. Paranoia spreads as the lines between friends and
3 chapters, 3 main characters and a game where they fight to win money or just survive.