How to get Sonic the Hedgehog 4 Episode 2 Keygen? Just follow instructions. First download Sonic the Hedgehog 4 Episode 2 Keygen generator . Run the generator on your machine and generate your serial key. Insert the product key when game requires that from you. if the key doesn’t work first time just hit generate button again and generate new key . Now you are ready to play the game. Enjoy.