Classic Game Room presents a CGR Undertow review of Showtime Championship Boxing from Destination Software, Inc. for the Nintendo Wii. For what it's worth, Showtime Championship Boxing is a motion-controlled boxing game. At least, in theory. There are a few different circuits to swing your way through, and there are also single-bout exhibitions and a two-player mode. The problem with all that is the game just doesn't work. Showtime Championship Boxing is a unanimous decision for one of the very worst Wii games of all-time. This video review features video gameplay footage of Showtime Championship Boxing for the Nintendo Wii and audio commentary from Classic Game Room's Derek.