Saturn games that have "vertical arcade modes":

1 Batsugun
2 Battle Garegga
3 Do DonPachi
4 DonPachi
5 Game Paradise/gemu tengoku
6 Gekirindan/Time Travel Shooting
7 Gun Frontier
8 Gunbird
9 Image Fight 10 Kyukyoku Tiger 2 PLUS
11 Layer Section (Rayforce/Galactic Attack)
12 Shienryu
13 Shippu Mahou Daisakusen/Kingdom GrandPrix
14 Skull Fang
15 Sonic Wings Special (almost full screen; only a few lines missing)
16 Strikers 1945 part 1
17 Strikers 1945 part 2

Note* Capcom Generation 1,3 & 4 have vertical arcade modes, but Capcom didn't convert (stretch) the original arcade games which have a different resolution as the Saturn's. This results in top and bottom borders!
These arcade games where released on Capcom arcade system released prior to the CPS-1.

Mercs (Capcom generation 4) however is the only game in all of the 5 volumes that does have a proper fullscreen vertical arcade mode, because that game was originaly released on the CPS-1 Capcom arcade system.
CPS-1 has a 320X240 resolution that corresponds with the Saturn's 320X240 resolution.

The volumes:
Capcom Generation 1 1942, 1943, 1943 KAI (remix of 1943)
Capcom Generation 2 Ghosts 'n Goblins, Ghouls 'n Ghosts & Super Ghouls 'n Ghosts
Capcom Generation 3 Exed Eyes, Pirate ship Higemaru, Son son, Vulgus
Capcom Generation 4 Commando, Mercs, Gunsmoke
Capcom Generation 5 SF2, SF2', SF2' TURBO



Saturn games that DON'T have "vertical arcade modes":

1 Blastwind -From the creators of Thunder Force for the Megadrive. Idon't know how this plays
2 Radiant Silvergun -An OVERRATED game which has "at the time of the release exciting 3D graphics", but is a slow and dull game. The game has nice features, but lacks action.
3 Soukyu Gurentai -Probably the best shooter that doesn't feature a vertical arcade mode, but that's because most are crap anyway.
4 Steam Hearts This is a really bad game. If one day you see it laying on the street don't walk away, use it as a frisbee instead.
5 Twinbee -Aaargh! Why did Konami do this?. Both games in this collection run on vertical monitors in the arcade. Konami gives us crap.