Apart from a focus on shooting lots of enemies, this genre scrolls on a fixed axis, either automatically (like Xevious) or by player input (like Defender).
Scramble
Scramble
March 1981
@987Life Force
NES
1987
@1454Hybris
Amiga
1987
@2Menace
Amiga
1988
@1685R-Type I
PC Engine
1988
@2573Truxton
SEGA Genesis
1989
@1451Battle Squadron
Amiga
1989
@3Twin Hawk
Arcade
1989
@1778Gun-Nac
NES
1990
@1922Carrier Air Wing
CP System
1990
@2611W Ring: The Double Rings
PC Engine
1990
@2625GG Aleste
Game Gear
1990
@2892Crisis Force
NES
1991
@1363Super R-Type
SNES
1991
@231Vimana
Arcade
1991
@1779Dogyuun
Arcade
1992
@1462Raiden Trad
SNES
1992
@1796Batsugun
Arcade
1993
@1446Mahou Daisakusen
Arcade
1993
@1447R-Type III: The Third Lightning
SNES
1993
@181Sylphia
PC Engine CD
1993
@3238Gunbird
Arcade
1994
@100319XX: The War Against Destiny
CP System II
1995
@2824Twin Cobra II
Arcade
1996
@995G-Darius
PlayStation
1998
@1407Armed Police Batrider
Arcade
1998
@1127Dimahoo
CP System II
2000
@2838Espgaluda
Arcade
2003
@1456R-Type Final
PlayStation 2
2003
@42Raiden III
PlayStation 2
2005
@1619Deathsmiles: Deluxe Edition
Xbox 360
2007
@272Guwange
Xbox 360
2010
@354Solace
Windows
2010
@203Jamestown
Windows
2011
@332Sine Mora
Xbox 360
2012
@431Dariusburst Chronicle Saviours
PlayStation 4
2015
@1633Hyper Sentinel
PlayStation 4
2018
@2029Flight of Pigarus
SEGA Master System
2018
@3285R-Type Final 2
PlayStation 4
2021
@27951943: The Battle of Midway
PlayStation 4
2021
@33361993 Space Machine
Steam Deck
2022
@3324