Sonic the Hedgehog 2

Not to be confused with the video

Sonic the Hedgehog 2 (often abbreviated to Sonic 2) is a game developed by Sega Technical Institute and published by Sega for the Sega Genesis in 1992.

In Sonic the Hedgehog 2 | Return of a Laughing Stock
Sonic the Hedgehog 2 is covered in the video and Scott Wozniak praises the game for being much better than Sonic the Hedgehog.

In The Rarest of Games
The game is used throughout the video as a joke with it being rare as Scott Wozniak drew a line on it, he calls the version "Sonic 2 With a Line".

"Sonic 2 with a line"
In The Rarest of Games, Scott Wozniak draws a line on a Sonic the Hedgehog 2 cartridge using a white sharpie. He would later claim his cartidge to be the most rare video game to exist. Following the release of The Rarest of Games, multiple viewers attempted to sell similar cartridges on the e-commerce website eBay for high prices. Most listings for the cartridge were taken down, however.