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)