I played it. Thought it was awful in almost every way. Glitchy, poor storyline, terrible voice acting, awful animation. The only good thing about that game were the zombies and weapons, both of which were scary and fun respectively. By the end though I just wanted to finish it and get it done, which is coming from a huge zombie fan.
I seriously thought I would play it more than I do... But I dunno... I find myself caring more ab MW3, BF3, Assassin's Creed Revelations, Arkham City and Dragon Age 2 (yea... STILL playing that one).
If they come out with a Dead Island 2 I'd be willing to give it a try, though.
When I checked gameplay vids I thought it looked a bit cheesy, but I gave it a chance anyway. I'm pretty sure someone will take the idea and do something really cool with it though.
I want Left 4 Dead but basically with a proper campaign instead of the arcade style they have at the moment. That's what I was hoping Dead Island would be.