RxNES v1.56 is released. RxNES is basically 80 lines of code added to an Open Source NES Emulator within the Unity3D Engine. Unity3D is not required, you can upgrade games with the Standalone Build.

RxNES v1.555 Changelog:
- Added : 2-Player Wiimote Controls! ( Autodetects 2 Wiimotes [Player 1 & 2] Bluetooth) If you have only 1 Wiimote, Player 2 uses Keyboard.
Hold 1 & 2 on wiimote and pair in windows bluetooth pairing, it will be autodetected.
- Fixed Z,X to be B,A instead of A,B.

Download: RxNES v1.56
Source:Here