The Shield is colored gray instead of its usual blue.The color palettes for the Act title cards are colored green, red and yellow instead of blue, red and yellow.As such, there is only simply a 'Press Start' option, resembling the title screen of the original Sonic the Hedgehog. The 2P Player VS and Options menu have been removed from the title screen.Here, he uses the sprites from the title screen of Sonic & Knuckles. The title screen shows Knuckles instead of Sonic and Tails.The only playable character here is Knuckles, who retains his moveset from Sonic & Knuckles. Knuckles the Echidna in Sonic the Hedgehog 2 is a 2D side-scroller platform video game with the exact same gameplay as in Sonic the Hedgehog 2 and Sonic & Knuckles.
Main articles: Sonic the Hedgehog 2#Gameplay and Sonic & Knuckles#Gameplay
