Games and Tools on Steam using .NET

Some of you may know that I have a near unhealthy Steam library, and I decided to spend a little time trying to figure out how many games on Steam are using the .NET Framework. I know most games are developed using native C/C++, and thanks to the popularity of Minecraft there's a growing Java contingent (like Delver and 3079), but I'll always have a soft spot for .NET.

This list is only games that use .NET in some respect.  Some games install .NET but don't appear to use it (like Batman: Arkham Origins).  Unity games are called out if they use Mono either instead of or in addition to native code libraries for logic.

This list isn't definitive, so if you know of other games on Steam that are using .NET or if I've put something on this list that shouldn't be here, please let me know by posting in the comments.

Title of Game (Game Framework/Technology)

• Adventures of Shuggy (XNA 4.0)
• AI War: Fleet Command (Unity)
• Ancients of Ooga (Windows Forms for settings app only)
• Apogee Throwback Pack (WPF for launcher only)
• Atom Zombie Smasher (Tao.OpenGL)
• Bastion (XNA 3.1)
• Borderlands 2 (WPF for launcher only.  Has XNA 4.0 linked, but doesn't appear to use it)
• Breath of Death VII (XNA 4.0)
• Cthulhu Saves the World (XNA 4.0)
• Cubemen (Unity)
• Cubemen 2 (Unity)
• Dead Pixels (XNA 4.0)
• DLC Quest (XNA 4.0)
• Dust: An Elysian Tail (XNA 4.0) 
• Fable 3 (SlimDX for video options applet only)
• Far Cry 3 (Windows Forms for Editor) 
• FEZ (MonoGame) 
• GunCraft (XNA? Need to validate)
• Hammerwatch (OpenTK)
• Lucidity (XNA 3.1)
• Magicka (XNA 3.1)
• Outlast (Unreal Engine...appears to just be C++/CLI managed hooks for debugging and editor wireup)
• Penny Arcade's On The Rain-Slick Precipice of Darkness, Episode 3 (XNA 4.0)
• Penny Arcade's On The Rain-Slick Precipice of Darkness, Episode 4 (XNA 4.0)
• Rogue Legacy (XNA 4.0)
• Sol Survivor (XNA 3.1)
• Space Engineers (SharpDX)
• Space Hulk (Unity)
• Terraria (XNA 4.0)
• The Witcher Enhanced Edition Digital Comic (Unity) 
• The Witcher 2 (C++/CLI, COM interop to handle registration, password recovery, etc.)

Title of Tool (Portion using .NET)

• Axis Game Factory (Unity)
• GameMaker (Asset compiler, development web server) 
• Music Creator 6 Touch (Fault reporter)

[Update 11/30] Added FEZ, Music Creator 6 Touch, Adventures of Shuggy, DLC Quest, Fable 3, Apogee Throwback Pack, Ancients of Ooga, Space Hulk, The Witcher Enhanced Edition, The Witcher 2.

[Update 1/16] Added GunCraft and Axis Game Factory.