This is a very simple premise. Can you beat the game with your x speed doubled? You can use cheating devices to get the same effect, but this uses no cheats and works on console!
Hashes:
Filename: Donkey_Kong_Country_V1.0_U_.smc
CRC-32: c946dca0
SHA-1: 0fcee45d9af5d2f62995ed4b04d22146b906c86b
CRC-32: c946dca0
SHA-1: 0fcee45d9af5d2f62995ed4b04d22146b906c86b
YouTube Video:
File download: