PC version Fans have made a PC version. Some are still early, so read the project page first.
Fans took Real Steel apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here is the project we know about:
Native Linux (and Windows-in-progress) recompilation of Real Steel (Yuke's, Xbox 360 XBLA, 584111E0) with the ReXGlue SDK. Home of the Factual Metal Launcher.