Did you know that the Sega Genesis (nee Mega Drive) version of Alexey Pajitnov's Tetris is exceedingly rare? That there are reportedly only about ten copies of this cartridge in the wild? Then you're probably not in the market for a million dollar copy of Tetris.
What could possibly command such an outlandish price? This particular copy of Tetris for Sega's 16-bit console was signed by Pajitnov himself, according to the owner of this "rare, exclusive, elusive, obscure and desirable centerpiece." He, by the way, paid 11,000 Euro for the cartridge back in 2008.
Now, cartridge collectors needn't really fork over a million bucks to get their hands on this thing—that's the "Buy It Now" price—but the eBay seller says he's rebuffed two offers of 12,000 GBP (just shy of $20,000 USD).
Hey, just make sure you have a Japanese Mega Drive on which to play this thing. Man, can you imagine? Spending tens of thousands of dollars on a copy of Tetris and then realizing it's region locked? You would feel really silly.