Mario Bros. is an arcade game published and developed in 1983 by Nintendo’s Miyamoto Shigeru. The original game is still commonly featured as a mini game in the Super Mario Advance series as well as many others. Mario Bros. has been re-released for the Wii's Virtual Console service in Japan, North America, Europe and Australia.
I was wondering why there are cosplayers Comiket 82 for this game, but Mario Brothers? I think this is more like Mario “Sisters”, though I doubt anyone’s really complaining. Thanks again to 4chanatic for sending this in!