1) Nickelodeon (using Flambe) -- web/mobile games

2) Disney (using Flambe) -- web/mobile games

3) Flambe (Haxe game engine)

4) reach3DX (next-gen 3D engine by Gamebryo)

5) Defender's Quest 2 (me) (HaxeFlixel engine)

6) Even the Ocean (Anodyne devs) (HaxeFlixel engine)

7) Rymdkapsel (Grapefrukt games)

8) Cardinal Quest II -- web/mobile (HaxeFlixel engine)

9) TiVo -- interface stuff I guess?

10) Tizen

11) Firefox OS -- just partnered with Flambe

12) Stencyl (Haxe game engine)

13) Motion-Twin (game studio that created Haxe)

14) Shiro Games (EvoLand devs)

That's just off the top of my head. So anyone using HaxeFlixel/HaxePunk/reach3dx/Flambe/OpenFL/Stencyl are all using Haxe-based game engines.