The latest WIP version 0.9.0 of the multi system emulator Mednafen has just been released on the official forum. It introduces support for the Virtual Boy. From the games I tested with earlier betas, everything ran perfectly, even those writing directly to the framebuffers, like Red Alarm, which were previously unplayable in any other VB emulator for Windows. Future versions will also feature a debugger, something developers should be really looking forward to.