Assault on 13th Labour is attempting a brute-force decryption of an RC5 code used in the online/offline game "Perplex City".
The project's software client currently does not support users behind firewalls. Version 1.3.1 of the client is available for Windows as of May 30, 2006.

好像是破一个什么游戏的用RC5加密的密码~~~已经进行到~12%了~~~不是很推荐参加~~~对RC5有兴趣的朋友可以参见Distibuted.net~~~