6. American McGee's Oz
American McGee is one of the most inventive video game creators working today, having brought Alice in Wonderland to vibrant life in his gritty, highly innovative re-tooling of the classic story (and its underrated sequel, also). If nothing else, the man has a clear vision and imbues his games with a unique art style, and so when it was announced that he would be working on an Oz video game (The Wizard of - not the HBO prison drama), the potential was laid out for another beautiful, unforgettable experience. Concept art looked fantastic, though the game never got to move much further than that due to financial difficulties at Atari. Curiously, the game was never shopped around to other publishers; it still could be, but given how long this project has been languishing around - and McGee has subsequently made an Alice sequel - it's safe to say that it's stone dead.