Games like UFO Stalker

Here are some great alternatives to UFO Stalker by Spectre17 :
Alien Flying UFO Space Ship
Alien Flying UFO Space Ship
★3.2
UFO RUSH : Alien invasion
UFO RUSH : Alien invasion
★4.0
Alien Guest: UFO arcade
Alien Guest: UFO arcade
★4.3
Celestial Assault
Celestial Assault
★4.1
Find the Alien - Alien Game
Find the Alien - Alien Game
★4.7
Alien Sniper shooting game
Alien Sniper shooting game
★3.9
Starscape: Rogue-like Shooter
Starscape: Rogue-like Shooter
★4.4
Drop Troop
Drop Troop
★3.9
DEAD WORLD APOCALYPSE : Zombie
DEAD WORLD APOCALYPSE : Zombie
★3.3
Idle Area 51
Idle Area 51
★4.4
U.F.O. Invasion
U.F.O. Invasion
★4.4
I.F.O
I.F.O
★4.6
Space War: Idle Tower Defense
Space War: Idle Tower Defense
★4.1
Xevion
Xevion
★3.6
Alien Path
Alien Path
★4.4
I.F.O!
I.F.O!
★4.6