Attack from Mars, what a beautiful game. It's defiantly on my list of wants. I have a set of the red ramps and a few other bits and pieces but haven't found a game yet. Probably not very smart to buy parts for games I don't own but can't help myself sometimes.
Had to edit because I took to long to post and was beaten to the send button. Bride of Pinbot was another game I brought a heap of parts for before owning. I eventually found the right game though and nothing went to waste. Great game to, I love mine.