Following the GZDoom port of Doom 64, BD-64 revitalizes the old Doom 64 with new special effects, particles, lightning, gore, new sounds, more weapon animations (shotgun reloads, smoother minigun barrels, etc.) and monsters and stuff cut from the original Nintendo 64 version. Works on GZDoom and Zandronum in OpenGL mode. (Zdoom and Zandronum Software mode are not supported.) No downloads available yet. Mod still is very early WIP.
Oh well, just 8 hours after I release BD64, I have an "Eureka Moment" and discover a more efficient way to render the faux lens flares. Seems like a 1.1 update will be required soon. This is the part about modding that sucks. :P