Sonic Unleashed (2008) Sonic and the Secret Rings (2007) Sonic the Hedgehog (2006) Shadow the Hedgehog (2005). Keep in mind this game is several years old. It consists of several fast-paced daytime Sonic stages from the game including Apatos, Holoska, Adabat, Chun-Nan, and Eggman Land. Sonic Unleashed GM is a fan game I made back in 2010 after Sonic Unleashed. He used the Unity game engine to work on the game, and in August 2020 he released 3 demos. But soon, an Argentinian programmer named Ian Moris (ChaosX), who was a huge fan of Sonic from his childhood, heard of the original game, and got an idea of doing a remake of the game for PC.