Download the Lunar IPS Patcher. Follow the instructions on https://fantasyanime.com/patching under How To Patch with Lunar IPS. You will need your own Sonic 3D Blast ...

who worked with me on Sonic Doom 2 and is best known for starting the Sonic ROM hacking scene. Back in March 2000, I gave him an in-progress build of the game along with a complete copy of the source ...