red-viper v1.3.4 by skyfloogle
Virtual Boy emulator that uses the 3DS's 3D screen
Install on your 3DS
Method 1Scan the QR code
With FBI (Remote Install › Scan QR Code) or 3dsDL (Scan QR Code). Either one installs it.
Method 2Send it to your 3DS
Open 3dsDL › Receive on the same Wi-Fi, then press:
Send to 3dsDL Not working?
Other ways to install
From your SD card: copy red-viper.3dsx into /3ds/ and start it from the Homebrew Launcher.
Send can't find your 3DS? Type the address 3dsDL shows on Receive, then press Send.
Send to 3dsDL
Files
| File | Size | SHA-256 | |
|---|---|---|---|
| red-viper.3dsx | 665 KB | ca4a948d…0215 | Download |
| red-viper.cia | 684 KB | 8add9688…64e1 | Download |
Screenshots
About red-viper
Continues mrdanielps's r3Ddragon, which came from Reality Boy and Red Dragon. The author says all officially licensed games run at full speed, even on an original 3DS. The screen runs at 50Hz, like the Virtual Boy.
ROMs need the .vb extension and can be zipped. Put them anywhere on the SD card: there's a file browser and it remembers the last folder you used. Saves and save states work. Buttons can be remapped, New 3DS buttons and the Circle Pad Pro included, and the touch screen can act as the right D-Pad or as A and B. There's local wireless multiplayer and a choice of colour palettes.
Virtual Boy games can't scale their depth, so the 3D slider moves the whole picture back or forward. Turn on "Virtual Boy IPD" mode for the full range.
If you get a DSP firmware error, update Luma3DS and dump the DSP firmware. Flashcarts like Gateway can't run it, because the recompiler needs Luma.
ROMs need the .vb extension and can be zipped. Put them anywhere on the SD card: there's a file browser and it remembers the last folder you used. Saves and save states work. Buttons can be remapped, New 3DS buttons and the Circle Pad Pro included, and the touch screen can act as the right D-Pad or as A and B. There's local wireless multiplayer and a choice of colour palettes.
Virtual Boy games can't scale their depth, so the 3D slider moves the whole picture back or forward. Turn on "Virtual Boy IPD" mode for the full range.
If you get a DSP firmware error, update Luma3DS and dump the DSP firmware. Flashcarts like Gateway can't run it, because the recompiler needs Luma.
Release notes
v1.3.4 · Sep 19, 2026
This release fixes a graphical issue with Virtual Bowling (#111), introduced in v1.3.3.