Games like UFO: Enemy Unknown. 20 Similar Games.

 

1. Open Xcom. (2015)
2. UFO: Terror from the Deep. (X-COM 2) (1995)
3. UFO: Apocalypse. (X-COM 3) (1997) 
4. Xenonauts. (2014)  
5. UFO: Extraterrestrials (2007)  
6. UFO: Extraterrestrials 2. (2014)
7. Laser Squad Nemesis. (2003)
8. Warhammer 40,000: Chaos Gate. (1998)    
9. XCOM: Enemy Within. (2013)
10. Fallout Tactics 3: Brotherhood of Steel. (2001)
11. Silent Storm. (2003)
12. Jagged Alliance 2. (2000)
13. Omerta: City of Gangsters. (2013)
14. Invisible Inc. (2015)
15. Krater. (2012) 
16. UFO Aftermath. (2003)
17. UFO Aftershock. (2005)
18. UFO Afterlight. (2007)
19. UFO: Alien Invasion. (2007)
20. XCOM 2. (2016)