The following games are tagged with invaders

Aguilas Del Espacio
Amstrad CPC464
Amsoft

Alien Attack
Colour Genie
Springfield

Alien Destroyers
BBC Model B
Micro Power

Alien Intruders
Acorn Electron
Database Publications

Attack On Alpha Centauri
BBC Model B
Software Invasion

Cosmos
Spectrum 16K
Abbex Electronics

Defcom
Spectrum 48K/128K
Quicksilva

Galactic Attack
Colour Genie
Microbyte

Galaxy
Commodore 16/Plus 4
Kingsoft

Invaders
Acorn Electron
IJK

Invagders Deluxe
Spectrum 48K/128K
Cronosoft

Invasion Auf Dem Weltraum
Colour Genie
Harald Boegeholz

Lazer 900
Commodore 16/Plus 4
Yes

Space Invaders
Dragon 32
J. Morrison Micros

Spectron
Spectrum 48K
Virgin Games

Starship Chameleon
Tandy Color Computer 1/2/3
Computerware

Swoop
Acorn Electron
Micro Power