There were three or 4 games of chess played on the old Forum - I can't think now of who started it (that darn cat?) - not a fight club regular - he posted first over on the general forum and then brought it over.
Any game like that could be played - battleship for instance.
There is no reason the Death matches would not be more suited for fight club than in character. They did do the cat vs commoner as LHH said and a couple others were about to do Kairu (?) fights.
A Kaiju is a template from one of the recent issues of Dragon. IIRC, you pick and choose from a bunch of features to add on. It's supposed to create Godzilla-like creatures. Ask Rei for more information.