Sonic the Hedgehog is an iconic and classic 2D side-scrolling platformer video game that was initially released back in 1991 for the SEGA consoles. Also referred to as Sonic 1, the game is the very first of the popular game series and is the base game of many ROM hacks, spin-offs, and fan-made games. The game centers around the blue hedgehog named Sonic and his ability to run at high speed through levels.