Hellfire Saga is Sonic 3 & Knuckles hack made with great inspiration from Castlevania and Ghosts n Goblins series by Narcologer.

Main Credits:
Narcologer - Hack and idea.

Programming:
Narcologer - Bosses, badniks, HP system, cutscenes, text screens (except very first one), dialogs.
TheBlad768 - Source code(modified disassembly of S3K - S.C.E), title screen with disclaimer text screen, credits screen, ending cutscene, bug fix, blood and meat.

Sprites:
Narcologer
Modgen
TSR

Music ports:
TheBlad768

Sounds:
Narcologer
TheBlad768

Level design:
Narcologer

Beta testing:
TheBlad768
Firerat
Mr. Cat
FoxConEd

Storyline:
Narcologer

External Credits:
ValleyBell - midi driver, mid2smps, vgm2mid, wtmd2mid, smpsconv.
Flamewing - smps2asm.
Clownacy - Sonic 2 Clone Driver v2 (v2.7+ prototype).