64		Machines (Windows, 1999)
63		Times of Conflict (Windows, 2000)
63		Glest (Windows, 2005)
62		Stellaris (Windows, 2016)
62		J.R.R. Tolkien's Riders of Rohan (DOS, 1991)
62		Disney's Treasure Planet: Battle at Procyon (Windows, 2002)
62		Homeworld: Deserts of Kharak (Windows, 2016)
60		Defenders of Ardania (Windows, 2012)
60		Annex: Conquer The World (Windows, 2012)
60		Pax Solaris (Windows, 2005)
60		Stellar Impact (Windows, 2011)
60		Picaroon (Windows, 2011)
60		Hive Rise (Windows, 2009)
60		Sango 2 (Windows, 2008)
60		Two Worlds II: Castle Defense (Windows, 2011)
60		Tryst (Windows, 2012)
60		Dawn of Fantasy (Windows, 2011)
60		Impire (Windows, 2013)
60		Werewolves Within (Windows, 2016)
60		Circle Empires (Windows, 2018)
60		Kingdom Rush: Origins (Windows, 2018)
60		Castles & Catapults (Windows, 2003)
60		Sins of a Dark Age (Windows, 2015)
60		MegaGlest (Windows, 2010)
60		Nexagon Deathmatch (Windows, 2003)
60		Impossible Creatures (Windows, 2003)
54		Final Demand: The Challenge (Windows, 1999)
54		Panic Soldier (DOS, 1997)
53		Conquest: Frontier Wars (Windows, 2001)
52		Sins of a Solar Empire: Rebellion (Windows, 2012)
52		Sins of a Solar Empire (Windows, 2008)
52		Persian Wars (Windows, 2001)
52		Primitive Wars (Windows, 2001)
52		Star Trek: Deep Space Nine - Dominion Wars (Windows, 2001)
51		Carrier Command (DOS, 1989)
51		Star Ruler (Windows, 2010)
51		Arena Wars Reloaded (Windows, 2007)
50		Star Wolves 3: Civil War (Windows, 2009)
50		Zero-K (Windows, 2012)
50		The Show (Windows, 2007)
50		Star Ruler 2 (Windows, 2015)
50		SpellCraft: Aspects of Valor (DOS, 1992)
50		Northland (Windows, 2003)
50		The Dark Legions (Windows, 2004)
50		Naval War: Arctic Circle (Windows, 2012)
50		World Fables (Windows, 2004)
50		Gemini Wars (Windows, 2012)
47		Homeworld (Windows, 1999)
46		Homeworld: Cataclysm (Windows, 2000)
45		Saga: Rage of the Vikings (Windows, 1998)
44		Homeworld: Remastered Collection (Windows, 2015)
43		Star Wars: Force Commander (Windows, 2000)
41		Homeworld 2 (Windows, 2003)
40		Ancient Space (Windows, 2014)

Notes: Games similar to Philip José Farmer's Riverworld, Games like Philip José Farmer's Riverworld, Cryo Interactive Entertainment, Cryo Interactive Entertainment, Windows, Strategy, Tactics, Fantasy, Sci-Fi, Futuristic, Real-Time, 1st-person, 3rd-person, Other, PC, Game Similarities.