The game gained notability for being the first 3D Sonic fangame, and it continues to be updated by its developers and supported by its community to the present day. Sonic Robo Blast 2 is a 3D Sonic game that uses a modified version of the Doom Legacy engine and has been in development since 1998.Retro Sonic Nexus was ultimately cancelled in 2011, splitting up the three projects, while Christian went on to work with Sega to make the 2011 remaster of Sonic CD. It is the first game to use the Retro Engine (the engine used for the 2011 remaster of Sonic CD), and later merged with two other Sonic fangames, Sonic Nexus and Sonic XG, to form Retro Sonic Nexus, a collaboration project made by Christian Whitehead. Retro Sonic is a 2D Sonic game created by Christian Whitehead.Sonic Fan Remix is a 2.5D Sonic game created in Unity that features reimagined levels from past Sonic games.The game caught media attention for its bizarre nature and its intent to lampoon the Sonic fandom.

Sonic Dreams Collection is a parody game presented as a Dreamcast development kit containing cancelled Sonic games.

Two sequels, Sonic After the Sequel and Sonic Chrono Adventure, were later developed and released in 2013, the latter incorporating Metroidvania and time travel elements.

The game received wide critical praise for its faithfulness to earlier titles. The game's original release in 2011 had a soundtrack with reused music coming from different video game franchises like Kirby, but a second release in 2013 came with original music specifically for the game. Sonic Before the Sequel is a 2D Sonic game set in between the events of Sonic the Hedgehog and Sonic the Hedgehog 2.Sonic Utopia is an open-world, 3D Sonic game, currently in development.This game gained notability for receiving a positive response from Sega. Green Hill Paradise Act 2 is a 3D Sonic game built by Daniel 'SuperSonic68' Coyle and other collaborators with the 3D Sonic Games Development Kit.The following are all original games based on the Sonic series: Sega is permissive of most fangames, as long as they are not for profit. Due to the popularity of the franchise, some of these products have received media attention. These products include video games, video game mods, ROM hacks, comics, and animations. Unlicensed developers and fans have created unofficial Sonic media, especially video games, relating to the Sonic the Hedgehog franchise. You can help by adding missing items with reliable sources. This is a dynamic list and may never be able to satisfy particular standards for completeness.

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