The $1m Tetris cart and other ultra-rare games

Last week we ran down the rarest limited edition consoles in existence, but none of those extravagantly coloured boxes are anywhere near as difficult to find as the gaming gems below.
From the ultra-collectable Panzer Dragoon Saga to $4,000 Uncharted 2 special editions, here's our run down of the rarest and most sought after games...
1990 Nintendo World Championships (NES)

Value: $15,000 / £9,600
http://cdn.medialib.computerandvideo...mb_wide620.jpgOnly the 90 winners of Nintendo's 30-city gaming tournament received this cartridge, which contains a six-minute score attack encompassing Super Mario Bros., Rad Racer and Tetris. Even rarer is the gold version, of which less than 30 were produced.

http://www.computerandvideogames.com...ra-rare-games/