Sonic Robo Blast 2 is a platform game made within id Software's Doom engine. It is a free Sonic the Hedgehog fan game inspired by the original Sega Genesis games that "attempts to recreate their design in 3D", and was the first fan-made 3D Sonic game created.

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Disclaimer: This is a fan-made project based on SEGA’s Sonic the Hedgehog franchise. All rights to Sonic and related characters belong to SEGA. This game is provided for free as a tribute to the original work. This project is not officially approved by SEGA, but falls under their tolerance policy for non-commercial fan games.