Sonic 2 Build A Burger is a fan-made game, likely not based on any official Sonic game, that uses Sonic characters within an unexpected context of building burgers. It's a departure from the usual platforming gameplay associated with Sonic.  The original Sonic the Hedgehog 2 was developed by Sega Technical Institute and released in 1992. It's a classic side-scrolling platformer focusing on speed and agility.  While this fan-made game shares the Sonic characters, it likely has vastly different gameplay mechanics, transforming the iconic speedster into a burger-flipping chef.  The goal is almost certainly not combatting Dr. Eggman but creatively building virtual burgers using Sonic elements. 

Sonic 2 Build A Burger

Sonic 2 Ashura