MUGEN is a 2D fighting game engine that support multiple characters from various famous games. site: http://mugen.elecbyte.com/ The characters and scenarios have to be downloaded manually (not in the default package). I think this is a great addition to the games section of gentoo. Reproducible: Always Steps to Reproduce:
http://mugen.elecbyte.com/ seems to be dead. Reopen when things come back.
I don't know what happened with the mugen site. There're other mugen sources at: http://openmugen.sigh.org Mugen developers forum: http://mugendev.shinmugen.net/ No news about elecbyte yet.