Favourite Board Games

When I was a kid, I loved the board game "Mouse Trap". Oh sure, there were games that were more challenging, or maybe even more fun, but Mouse Trap had a great gimmick. As you roamed around the board, you would assemble a, er, mousetrap piece by piece. The trap was one of these elaborate things where you'd roll a marble down a pipe which would tip over a bucket and launch a hunk of plastic, and so on until the trap would come down over your player...a plastic mouse!

How about you? What's your favourite board game and why?