LEGO.com now offers a playable demo for LEGO Marvel Superheroes. They don't say much, here's the entire description: "Here you can download and play a demo of LEGO® Marvel Super Heroes™. It might be a good idea to get your parents to help with this. This demo is available for PC and needs to be installed for you to play this awesome level. The demo works for Windows (8, 7, XP, Vista) but not for MAC." Thanks Clever Caviar.