Red ViperA Virtual Boy emulator for the Nintendo 3DS continuing mrdanielps's work on r3Ddragon, which is itself based on Reality Boy / Red Dragon. It uses a dynamic recompiler with busywait detection and a hardware-accelerated renderer to achieve high performance on the 3DS's limited hardware. Features:

• All officially licensed games are playable at full speed, even on the original 3DS
• 3D support
• Game saves are supported
• Map either the A/B buttons or the right D-Pad to the face buttons, with the other being on the touch screen
• New 3DS C-Stick is also supported
• Configurable face button mapping
• Configurable color filter

Future additions:

• Support for PCM samples
• Savestates
• Homebrew support
• Circle Pad Pro support
• Button controls for menu
• More versatile color filter
• A forwarder to allow loading a specific game from the home menu