Hedgehog Engine 2

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Hedgehog Engine 2 (also referred to as HE2) is a game engine created by Sonic Team. The engine is a successor to the original Hedgehog Engine. The engine was created for Sonic Forces, and has been used in several other SEGA games since, such as Mario & Sonic at the Tokyo 2020 Olympic Games, Puyo Puyo Tetris 2, and Sonic Origins.

Sonic Origins

In addition to Hedgehog Engine 2, Sonic Origins also incorporates Retro Engine v5U as a backend to run the four playable remasters in the collection.