Stephan Martiniere, formerly creative visual director at Midway Chicago and now an art director at Id Software, has uploaded several interesting artworks to his portfolio site, including the concept image above from an unannounced and unreleased game called Hero. 

You can't infer much about the project's gameplay from the image, but you can make out a man holding a sword and leading a child in a dilapidated city, and what looks like a floating figure in the background. Perhaps this was Midway's answer to Infamous and Prototype?

Martiniere also posted concept art for the stages in Mortal Kombat vs. DC Universe -- Special Forces, Bat Cave, and Fortress of Solitude -- which you can admire after the break:

[Via Siliconera]