Gikopoi 2ch-style anonymous chatroom

Gikopoi is a 2ch-style (anonymous, no registration) chatroom that plays like an online game, where chatters are represented as little cat characters that can move around a large world. It seems to be most active between about 3pm EST and 11pm EST.

http://l4cs.jpn.org/gikopoi/flash/gikopoi141_for/flash_gikopoi.html