No, this isn't the super happy version.
An Assembler Games forum user by the name of Andrew Borman has acquired, among other things, an early demo build of the notoriously subversive N64 platformer, Conker's Bad Fur Day. The demo build apparently contains a number of explicit scenes that didn't make it into the retail version of the game. Like the scene to the above right, which shows Tediz doctors doing awful things to a live squirrel soldier, and some fancy lighting effects doing awful things to the game's framerate.
Borman acquired the demo rom, alongside BETA copies of Perfect Dark, from a "trusted source," apparently for a pretty penny, as he was asking the community to donate $2,500 to cover his costs before he would release the roms to the public. However, the "unwanted media attention" seems to have changed Borman's mind, and he's decided to release the roms to the public prematurely, "taking a huge loss" in the process. As of today, he's received $850 of the $2,500 he asked for.
Oddly enough, more violence isn't what history-hungry rom collectors are looking for when it comes to Conker's Bad Fur Day. The game quite famously started out as a cutesy 3D platformer in the vein of Banjo Kazooie, before Rare realized the N64 was overflowing with cutesy 3D platformers and decided to switch things up by injecting a dose of dark British humor. A playable version of the initial, happy-and-fun version is pretty much the Holy Grail to N64 rom collectors.