STATUS: I am eagerly waiting for 100+ PCE shooters to be broken down into their respective sub-genres...
Your wish is my command!
See below lists broken down into sub-genre and point out any mistakes and/or additions which need to be made.
HuCard Horizontal Shoot–‘Em–Ups (includes SuperGrafx)Aero Blasters
Air Zonk (TG-16)
Aldynes: The Mission Code for Rage Crisis (SuperGrafx)
Atomic Robo-Kid Special (multi-directional)
Barunba (multi-directional)
Bouken Danshaken Don San-Heart Hen / Lost Sunheart, The
Coryoon
Darius Alpha (enhanced for the SuperGrafx)
Darius Plus (enhanced for the SuperGrafx)
Dead Moon-Gessekai No Akumu
Dead Moon (TG-16)
Deep Blue-Kaitei Shinwa
Deep Blue (TG-16)
Download
Fantasy Zone (non-forced-scrolling)
Fantasy Zone (TG-16) (non-forced-scrolling)
Gokuraku Chuka Taisen
Gradius
Hana taakadaka!?
Heavy Unit
Magical Chase (regular and PCE fan release)
Magical Chase (TG-16)
Mr. Heli no Daibôken (multi-directional)
Ordyne
Ordyne (TG-16)
P 47-The Freedom Fighter
Paranoia
Parodius da!!
PC-Denjin-Punkic Cyborgs
Power Gate
Psychosis (TG-16)
Rabio Lepus Special
Rock On
R-Type (TG-16)
R-Type I
R-Type II
*Salamander (also has vertical stages)
Side Arms, Hyper Dyne
Side Arms, Hyper Dyne (TG-16)
Sinistron (TG-16)
Tenseiryû / Saint Dragon
Violent Soldier
W-Ring / Double Ring
CD Horizontal Shoot–‘Em–Ups (includes Super CD and Arcade CD)Ai Chôaniki
CD-Denjin-Rockabilly Tengoku
Chôaniki
Cotton, Fantastic Night Dreams
Cotton, Fantastic Night Dreams (TG-16)
Download 2
Forgotten Worlds
Forgotten Worlds (TG-16)
Gate of Thunder
Gate of Thunder (TG-16)
Gradius II-Gofer no Yabô
Hawk F-123
Hellfire-S
Kiaiden 00
L-Dis
Legion
Lords of Thunder (TG-16)
Macross 2036
Metamor Jupiter
Rayxanber II
Rayxanber III
R-Type Complete CD
Side Arms Special, Hyper Dyne
Spriggan Mark II - the Terraforming Project
Super Air Zonk (TG-16)
Super Darius
Super Darius 2
Syd Mead’s Terraforming (TG-16)
Terraforming
Winds of Thunder
Wonderboy III-Monster Lair (platformer hybrid)
Zero Wing
HuCard Vertical Shoot–‘Em–Ups (includes SuperGrafx)1941 Counter Attack (SuperGrafx)
1943 Kai
Blazing Lazers (TG-16)
Burning Angels
Cyber Core
Cyber-Core (TG-16)
Daisenpu
Dragon Saber
Dragon Spirit
Dragon Spirit (TG-16)
Final Blaster
Final Soldier
Final Soldier Special Version
Formation Armed F / Armed Formation F
Galaga ’88
Galaga ’90 (TG-16)
Gunhed
Gunhed Special Version
Hany in the Sky
Image Fight
Kyûkyoku Tiger / Ultimate Tiger
Metal Stoker (multi-directional)
Override
Psycho Chaser
Raiden
Raiden (TG-16)
*Salamander (also has horizontal stages)
Soldier Blade
Soldier Blade (TG-16)
Soldier Blade Special Version
Space Invaders-Fukkatsu No Hi
Super Star Soldier
Super Star Soldier (TG-16)
Tatsujin
Terra Cresta II
**Thunder Blade (also has into-the-screen stages)
Toilet Kids
Toy Shop Boys
Twin Bee-deta na!!
CD Vertical Shoot–‘Em–Ups (includes Super CD and Arcade CD)Alzadick - Summer Carnival '93
Avenger
Buster Bros. (TG-16) (static screen)
Daisenpû Custom
Ginga Fukei Densetsu-Sapphire
God Panic-Shijyou Saikyu Gundan
Image Fight II
Nexzr
Nexzr Special - Summer Carnival '92
Pomping World (static screen)
Psychic Storm
Seirei Senshi Spriggan - Summer Carnival '91
Space Invaders - The Original Game
Star Parodier / Fantasy Star Soldier
Steam Hearts
Super Raiden
Sylphia
HuCard Into-the-screen Shoot–‘Em–Ups (includes SuperGrafx)After Burner II
Battle Ace (SuperGrafx)
Space Harrier
Space Harrier (TG-16)
**Thunder Blade (also includes vertical stages)
CD Into-the-screen Shoot–‘Em–UpsSpace Fantasy Zone (unreleased)
*Note: Salamander is included in both the Vertical and Horizontal lists
**Note: Thunder Blade is included in both the Vertical and Into-the-screen lists