10 MORE Video Game Secrets That Took YEARS To Find

Widely considered one of the most influential games of all time, Rare's 1997 shooter served as the inspiration for countless console first-person shooters for years to come.

Aside from its polished campaign, it featured a now legendary multiplayer mode and of course countless entertaining cheat codes. These included DK Mode, which gave character models ludicrous proportions similar to that of Donkey Kong, and Tiny Bond, which shrank the player down to less that half their original height.

A much more impressive secret, however, wasn't discovered until many years later. In 2012, an intrepid fan posted in the Rare Witch Project forums that they had discovered a fully functional ZX Spectrum emulator buried within the game's code.

Rare are known for having developed several titles for the Spectrum in the early 1980s, and during Goldeneye's development they tested Spectrum emulation on N64 as a side project - with the shooter happening to be the game that they tested it in.

Rather than removing the code before shipping, Rare simply disabled it, leading fans to patch it back in later. Though it's near-impossible on the console itself, accessing the Spectrum emulator is significantly easier on an N64 emulator.