Mortal Kombat – Unlocking Reptile
The ability to unlock the secret character Reptile on the original “Mortal Kombat” deserves special credit due to the fact that unlike other developer secrets, this task was insanely hard to accomplish. Throughout the single-player campaign, Reptile—Scorpion re-skinned in a green costume—would appear to taunt the player with cryptic messages. A number of Flawless Victories achieved at key moments would let players challenge Reptile, facing both Scorpion and Sub-Zero’s attacks. It wasn’t easy, but the enthusiasm fans put into the character led the developers to include him in future games with a brand new backstory.