sonic.exe official collection round 1-3

I want to find the third game in YouTube, but it just dosen´t shows me the name of the fangame, and I want to watch a tutorial of how to get the good ending with Sonic. Anybody knows the name?

i mean it wouldnt hurt to add checkpoints and remove some spikes...

doHow do I get the good ending?

dawg we need to boost this shit up