Cerebralbore101 on 02 October 2020
IMO the best system for Smups is the Genesis/Megadrive.
MUSHA
Eliminate Down
Thunder Force II
Thunder Force III
Thunder Force IV
Greylancer
Elemental Master
Giaares
Fire Shark
Steel Battalion
Truxton
Get a Mega SG system so you can play Genesis/Megadrive games natively in 1080p, 60 FPS, with vastly improved sound quality (thanks to sound no longer being compressed by a coaxial cable, like the original Genesis/Megadrive).
Also a bunch of great run n' gun games on Genesis/Megadrive as well...
GunStar Heroes
Contra Hard Corps
Vectorman
Vectorman II
Ranger X
Alien Soldier
