The SRB2 Skybase is a small fan community for SRB2 modding and talking about other various topics.

"Sonic Robo Blast 2 is a 3D open-source Sonic the Hedgehog fangame built using a modified version of the Doom Legacy port of Doom. SRB2 is closely inspired by the original Sonic games from the Sega Genesis, and attempts to recreate the design in 3D."
- SRB2.org

For more information on SRB2, visit SRB2.org, the official website.