I already have the Wii AND the PC version (the latter only because it was in a Steam indie game pack, 10 games for 30ā¬, also included Braid, The Path, Blueberry Garden, Mr. Robot, Darwinia, Gish, Crayon Physics Deluxe, Audiosurf and Everyday Shooter).
Anyway, Bridge Construction Set is an awesome game (well, the series is, I don't think I've played that specific iteration), it's what World of Goo is based on. We had some good laughs with it when we built our minimalist designs that collapsed immediately after the last train went through...