PC owners can now download a trial version of Lego Marvel Super Heroes from the company's official site.
PlayStation 3 and Xbox 360 versions of the demo will also arrive this week, Marvel announced over the weekend at New York Comic-Con.
Developed by regular Lego wizards TT Games, Marvel Super Heroes features an astonishingly large roster of characters and a huge version of Manhatten to explore.
The demo offers sections with Hulk, Iron Man and baddies Abomination and Sandman.
The full game will be released on 15th November in the UK for 3DS, DS, PC, PS3, Wii U, Vita and Xbox 360, while a next-gen version will be a launch title for both PlayStation 4 and Xbox One.
Watch TT Games demo Lego Marvel Super Heroes on stage at EGX 2013 below to see the playable, superpowered Stan Lee character in action: