I introduced Colossal Arena to Gavin, Phil and Katie on Sunday. First time I've played it, though I've been carrying it hopefully to game sessions for a while now. Tricky game to explain - once you've got across the idea of the rounds and the betting and eliminations, you also by rights should go on to explain backers and special powers, but by now your audience is looking pie-eyed and just want to get on with it. However, a couple of card plays dispels the confusion, and it plays smoothly and swiftly with lots of fun along the way. Lived up to my expectations.