Games like Diablo 3. 30 Similar Games.

1. Diablo. (1996)  
2. Diablo 2. (2000)  
3. Torchlight 2. (2012)  
4. Dungeon Siege. (2002) 
5. Dungeon Siege 3. (2011) 
6. Sacred. (2004) 
7. Dragon Age. (2009) 
8. World of Warcraft  (2004)
9. Neverwinter Nights 2. (2006)
10. Dark Souls. (2011)
11. The Elder Scrolls. (2002-2011) 
12. The Witcher. (2007-2015) 
13. Dragon Age. (2011-2014) 
14. Final Fantasy. (1987-2016) 
15. Mount & Blade. (2008) 
16. Divinity. (2014) 
17. Path of Exile. (2013) 
18. The Bard's Tale. (2004) 
19. Sacred. (2004)
20. Icewind Dale: Enhanced Edition. (2014)
21. Baldur's Gate 2: Shadows of Amn. (2000)
22. Pillars of Eternity. (2015) 
23. Planescape: Torment. (1999)
24. Arcanum. (2001) 
25. Avernum 2: Crystal Souls. (2015)
26. Avadon: The Black Fortress. (2011)
27. Star Wars: Knights of the Old Republic. (2003)
28. Fallout Tactics: Brotherhood of Steel. (2001)
29. Serpent in the Staglands. (2015) 
30. Lands of Lore. (1993)

Games like Civilization: Call to Power. 26 Similar Games.

1. Civilization: Call to Power (1999)  
2. Call to Power 2 Civilization (2000)
3. Civilization 3. (2001) 
4. Sid Meier's Civilization (1991)
5. Civilization 2 Gold (1996)  
6. Civilization 2: Test of Time. (1999)  
7. Civilization 2: Test of Time Fantasy. (1999)  
8. Civilization 3: Play the World. (2002) 
9. Civilization 3: Conquests. (2003) 
10. Civilization 4. (2005)
11. Civilization 5. (2010)  
12. Civilization: Beyond Earth. (2014) 
13. Free Civilization. (2013 -2015)
14. Free Colonization. (2002 - 2015)
15. Colonization. (1994)
16. Civilization 4: Colonization. (2008)
17. Civilization 4: Dune Wars. (2009)
18. Civilization 4: Planetfall Mod (2006) 
19. Galactic Civilizations. (2003) 
20. Galactic Civilizations 2. (2006)
21. Sid Meier's Alpha Centauri. (1999) 
22. Pandora: First Contact. (2014)
23. Warlock: Master of the Arcane. (2012)
24. Elemental: War of Magic. (2010)
25. Master of Magic. (2014) 
26. Chariots of War. (2003) 

Games like Dune 2. 9 Similar Games.

1. Warcraft 2. (1995)
2. StarCraft. (1998)
3. Rise of Nations (2003)
4. Rise of Nations: Rise of Legends. (2006)
5. Empire Earth.  (2001)
6. Age of Empires 3. (2005)
7. Age of Mythology. (2002)
8. Command and Conquer: Generals. (2003)
9. Star Wars: Galactic Battlegrounds. (2001)
10. Zed (1996)

Games like Knights of Honor. 24 Similar Games.

1. Stronghold 2. (2005)
2. Stronghold: Crusader. (2002)
3. Anno 1701. (2006)
4. Crusader Kings 2. (2012) 
5. Europa Universalis 3. (2007)
6. Medieval: Total War. (2006) 
7. Tzar: The Burden of the Crown. (2000)  
8. Reign: Conflict of Nations. (2006) 
9. Celtic Kings: Rage of War. (2002)  
10. Rising Kingdoms. (2005)    
11. Hearts of Iron. (2002)
12. Empire Earth.  (2001)
13. Age of Empires 3. (2005)
14. Age of Mythology. (2002) 
15. Rise of Nations. (2003)
16. Rise of Nations: Rise of Legends. (2006)
17. Warcraft 3. (2002)
18. StarCraft 2. (2010)
19. Dune 2. (1992) 
20. Command and Conquer: Generals. (2003)
21. WorldShift. (2008) 
22. ParaWorld.  (2006)
23. Dominions 4. (2014) 
24. Great Invasions. (2006) 

Games like Icewind Dale. 19 Similar Games.

1. Icewind Dale. (2000)
2. Icewind Dale 2. (2002)
3. Icewind Dale: Enhanced Edition. (2014)
4. Baldur's Gate. (1999)
5. Baldur's Gate 2: Shadows of Amn. (2000)
6. Baldur's Gate 2: Throne of Bhaal. (2001)
7. Temple of Elemental Evil. (2003)
8. Neverwinter Nights. (2002)
9. Neverwinter Nights 2. (2006)
10. Pillars of Eternity. (2015) 
11. Planescape: Torment. (1999)
12. Arcanum. (2001) 
13. Avernum 2: Crystal Souls. (2015)
14. Avadon: The Black Fortress. (2011)
15. Star Wars: Knights of the Old Republic. (2003)
16. Fallout Tactics: Brotherhood of Steel. (2001)
17. Serpent in the Staglands. (2015) 
18. Lands of Lore. (1993)
19. Dungeon Siege. (2002)

Games like UFO: Aftermath. 15 Similar Games.

1. UFO Afterlight. (2007)
2. UFO Aftershock. (2005)
3. Xenonauts. (2014)
4. UFO: Enemy Unknown. (X-COM 1) (1994)
5. UFO: Terror from the Deep. (X-COM 2) (1995) 
6. UFO: Apocalypse. (X-COM 3) (1997) 
7. UFO: Extraterrestrials. (2007)
8. Laser Squad Nemesis. (2003)
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)

Games like UFO: Aftershock. 15 Similar Games.

1. UFO Afterlight. (2007)
2. UFO Aftermath. (2003)
3. Xenonauts. (2014)
4. UFO: Enemy Unknown. (X-COM 1) (1994)
5. UFO: Terror from the Deep. (X-COM 2) (1995) 
6. UFO: Apocalypse. (X-COM 3) (1997) 
7. UFO: Extraterrestrials. (2007)
8. XCOM: Enemy Within. (2013)
9. Jagged Alliance 2. (2000)
10. Fallout Tactics 3: Brotherhood of Steel. (2001)
11. Laser Squad Nemesis. (2003)
12. Silent Storm. (2003)
13. Omerta: City of Gangsters. (2013)
14. Invisible Inc. (2015)
15. Krater. (2012)

Games like UFO: Afterlight. 15 Similar Games.

1. UFO Aftershock. (2005)
2. UFO Aftermath. (2003)
3. Xenonauts. (2014)
4. UFO: Enemy Unknown. (X-COM 1) (1994)
5. UFO: Terror from the Deep. (X-COM 2) (1995) 
6. UFO: Apocalypse. (X-COM 3) (1997) 
7. UFO: Extraterrestrials. (2007)
8. XCOM: Enemy Within. (2013)
9. Fallout Tactics 3: Brotherhood of Steel. (2001)
10. Laser Squad Nemesis. (2003)
11. Silent Storm. (2003)
12. Jagged Alliance 2. (2000)
13. Omerta: City of Gangsters. (2013)
14. Invisible Inc. (2015)
15. Krater. (2012)

Games like Age of Wonders. 20 Similar Games.

1. Age of Wonders. (1999)
2. Age of Wonders 2 (2003)
3. Age of Wonders: Shadow Magic. (2003)
4. Age of Wonders 3. (2014)
5. Heroes of Might and Magic 4. (2002)
6. Eador: Genesis. (2014) 
7. King's Bounty: Armored Princess (2009)  
8. Disciples 2. (2002)
9. Warlords 4. (2003)
10. Worlds of Magic. (2014)  
11. Warlock: Master of the Arcane. (2012) 
12. Elemental: War of Magic. (2010)
13. Master of Magic. (1994)  
14. Civilization 2. (1996)
15. Dominions 4. (2014)
16. Age of Empires 2. (1999)
17. Warcraft 2: Tides of Darkness. (1995)
18. Endless Legend. (2014)  
19. Sorcerer King. (2015)  
20. Etherlords. (2001)

Games like King's Bounty. 16 Similar Games.

1. King's Bounty. (1990)
2. King's Bounty: The Legend. (2008)
3. King's Bounty: Armored Princess (2009)
4. King's Bounty: Crossworlds. (2010)
5. King's Bounty: Legions. (2011)
6. King's Bounty: Warriors of the North. (2012)
7. King's Bounty: Dark Side. (2014)
8. Heroes of Might and Magic 5. (2006)
9. Eador. (2014)
10. Age of Wonders 2. (2003) 
11. Disciples 2. (2002)
12. Elemental: War of Magic. (2010) 
13. The Settlers 2. (1996)
14. Master of Magic. (1994)
15. Dominions 4. (2014)
16. Elven Legacy. (2009)