10) The Phantom: Originally announced in 2002, this never to-be-released gaming platform had a seemingly solid idea at its core: A set-top launch console that could play PC games, meaning thousands of Phantom games would be available at launch and development would be a snap. The problem was, like its namesake, The Phantom remained invisible. Reportedly, Phantom Entertainment has lost more than ?62.7 million since it began work on The Phantom, without a single unit ever being sold. The SEC has implied Phantom's president was running a  "pump and dump" stock scheme in promoting the Phantom.

9) Advent Rising: Okay, it's hard to call a game with ratings like 67% on gamerankings.com a total failure, but the expectations for this 3rd person action title were so high before the game's 2005 release, anything short of magnificent was a failure. The game had everything going for it: Written by Orson Scott Card, and hyped to the moon, Advent Rising was planned as the first in a three part series. It had a comic book. There was a million-dollar contest at the game's launch for the first player to find a hidden symbol in-game. But when it came out for the PC and Xbox, it got mixed reviews and gamers were like "meh." As far as the million bucks: Majesco was forced to cancel the contest when security issues with Xbox Live's global time syncing made the contest unfair.