The six-year lifespan of the Nintendo Wii produced a LOT of games. Most of them were cheaply-made, boring titles that quickly made their way to a department store bargain bin (if they hadn't started there to begin with), but there are a few that have withstood the test of time, not for gameplay's sake, but in collector's value!
The 15 games we're looking at here are the biggest of the big ticket items in the Wii's library. Some of these titles will surprise you, others belong on the list, but all of them could make you (or cost you) and nice chunk of change when a collector sees it. Look for these games at the next gaming convention.