Some interesting notes regarding the Playstation Eye and Wii Balance Board.
PSEye
Release - Late October, 2007.
Compatible games - 15 (2 more in development)
Games by Year:
2007 - 13
2008 - 2 (2 more in development [announced])
Best selling compatible game - Burnout Paradise - 660k
Best selling PSEye required game - Eye of Judgement - 200k
I know it's a poor measure for sales but ti doesn't look liek it could have attained 3 million in sales under these circumstances. It also apears developer support has slowed down dramatically.
Wii Balance Board
Release - Dec 2007.
Compatible games - 2 (6 more in development [announced])
Best selling compatible game - Wii fit - 4.37 million
Best selling BB required game - Wii Fit - 4.37 million
Just like the Wii-mote itself, the Wii Balance Board is successful because of the bundled software. Wii Sports and Wii Fit are arguably the epitome's of peripheral/control input defining titles. Eye Of Judgement wasn't a bad game, it just wasn't as defining of a title to generate the kidn of success seen by the Wii-mote/Balance Board.