March 15, 2014 (2.1)[3] Sonic Robo Blast 2 (often abbreviated SRB2) is a platform game made within id Software's Doom engine.

[9] Each character has unique abilities that allow them to fight Eggman's robots, and in contrast to contemporary 3D Sonic games, the design of each level encourages open-ended exploration and discovery.

[7] Multiplayer is made possible either via local area network or Internet connection,[13] with players either racing to the end of a stage or battling in a first-person shooter mode.

[14] The first versions of Sonic Robo Blast 2 were developed by Wallbank in April 1998 using The Games Factory,[1] which was quickly determined to be inadequate.

[14][17] Demo releases continued steadily throughout the 2000s, encouraged by an active modding community, some members of which would end up joining Sonic Team Junior.

[23] Sonic Robo Blast 2 has been the subject of multiple short-form reviews and received positive reception in various video game publications, including 1Up.com, Kombo,[14] Wireframe,[7] Retro Gamer,[17] PC Zone,[13] and Rock Paper Shotgun.

[26] The game has been noted most prominently for its longevity, with Dominic Tarason of Rock Paper Shotgun calling it "A real slow-burning labour of love".