7
UFO:AI Team
370
Open source
UFO: Alien Invasion is a squad-based tactical strategy game.
1
ALTAR Interactive
226
Shareware
UFO Aftermath is a tactical game where you must repel an alien invasion.
93
KraiSoft Entertainment
42,794
Shareware
A simple, fun and entertaining shooting game for the whole family.
111
SigmaTeam
5,979
Shareware
Shoot as many aliens as you can while trying to survive in this action game.
17
Half-Life Invasion Team
Freeware
After Half-Life, enter Invasion, its single-player mod.
6
Alien Software
102
Freeware
A free and simple text-to-speech tool that reads aloud your TXT files and notes.
99
PardisGame
32
Commercial
Third game in the Ben 10 game series with the story of an alien invasion.
Adept studios
199
Shareware
In this game you have to protect the world against the alien invasion.
5
GameHitZone
1,045
Freeware
A third-person shooter game with the goal of stopping an alien invasion.
12
Deep Silver Volition
9,007
Shareware
Save the world from an alien invasion in this action-packed game.
Falco Software Company
23
Freeware
An alien invasion has begun, and we have only one chance to stop them.
Meyer/Glass Interactive
25
Shareware
Execute a devastating counterattack against amassive alien invasion in this all-new editionof Missil....
4
Firaxis Games
488
Shareware
Control the global defense team in a battle against a terrifying alien invasion.
1
Matrix Games
5
Commercial
Highly enhanced rebuild of the Close Combat Invasion Normandy game.
Falco Software Company
Freeware
Paper Space is an addictive runner game. In it you have to control an alien UFO.
11 bit studios
12
Commercial
It is an action game that reveals a planet invasion by the alien machines.