Sarcasticgamer.com gives it's impressions of the Pixel Junk Eden demo:
"Fresh from the American PlayStation Store comes a whole heap of fancy updates. As well as being treated to a sale dropping PAIN, PixelJunk Monsters and three other downloadable games to the low, low price of $4.99 each, Siren: Blood Curse makes it appearance, with Europe astonishingly receiving the game at the same time (but not the demo, meaning curious European gamers will have to spend at least 7 quid to find out what it's like, thanks SCEE) as well as the almost typical Guitar Hero and Rock Band song packs. Also thrown in was a demo of Elefunk, which is rubbish, and PixelJunk Eden, the third game from the small Japanese development studio Q-Games.
Hit the jump for my Eden impressions."