Im dont know that site and not look legit.
You are spamming or you are serious ?
You dont need other emulator than retroarch which can emulate everything.
But you need controller.
If not retroarch in which platform are you interested.
By platform im mean old pcs,consoles...
@Neckless I see that feature has vba-m.
Im giving screenshot.
And how compile vba-m on debian or debian based distro:
Then you can use sudo ninja make install or something like that.
If you use windows or mac os you can...
What version of gens are you using ?
Anyway try retroarch it has got latest gens core:
Lot of fixes.
Every sonic works every time.
You van also try mednafen with mednaffe gui.