65		Galaxy Admirals (Windows, 2017)
58		Solar Settlers (Windows, 2017)
55		Frozen Synapse 2 (Windows, 2018)
55		Tank on Tank Digital: West Front (Windows, 2017)
54		Fantasy World (Windows, 2018)
54		Auralux: Constellations (Windows, 2016)
53		Battle Isle 2200 (DOS, 1994)
53		Imperium (Windows, 2015)
52		Star Traders 4X: Empires in Exile (Windows, 2014)
52		Frozen Synapse: Prime (Windows, 2014)
52		The Last Federation (Windows, 2014)
52		Armageddon Empires (Windows, 2007)
51		Battle Isle (DOS, 1991)
51		Frozen Synapse (Windows, 2011)
50		Fireteam 2200 (DOS, 1991)
50		Space Crusade (DOS, 1992)
50		Double Cross (DOS, 1991)
50		Boter kaas en eieren (DOS, 1990)
50		Candy Cruncher (Windows, 2001)
50		Circlink (DOS, 1989)
50		Crush! Deluxe (Windows, 1997)
50		Advanced Strategic Command (DOS, 1998)
50		Laser Squad (DOS, 1992)
50		Battles of Destiny (DOS, 1992)
50		Space Conflict (DOS, 1993)
50		Pic Tac Toe (Windows, 1999)
50		Logication (Windows, 1999)
50		Laserwars (DOS, 1994)
50		Nectaris (DOS, 1995)
50		Battle Isle '93 - The Moon of Chromos (DOS, 1993)
50		Em@il Games: X-COM (Windows, 1999)
50		Imperial Space Command (DOS, 1986)
50		Stelcon 2469 (DOS, 1992)
50		Space Marines: Der stählerne Kaiser (DOS, 1995)
50		Power: The Game (Windows, 1995)
50		Daleks (Windows, 2002)
50		Kto spotka UFO (DOS, 1994)
50		Mayhem Intergalactic (Windows, 2007)
50		Planet M.U.L.E. (Windows, 2009)
50		Assimilation (Windows, 2002)
50		Nim (Windows, 2000)
50		Crimson Fields (Windows, 2001)
50		Advanced Strategic Command (Windows, 2001)
50		Daleks (DOS, 1985)
50		Commanders: Attack of the Genos (Windows, 2008)
50		Alien Assault (Windows, 2009)
50		Future Wars (Windows, 2010)
50		Sword of the Stars II: Lords of Winter (Windows, 2011)
45		Gaiflame (Windows, 2017)
44		Star Realms: Deckbulding Game (Windows, 2016)
43		Sid Meier's Starships (Windows, 2015)
41		Massive Assault Network 2 (Windows, 2006)
41		Massive Assault Network (Windows, 2004)
41		Leviathan: Warships (Windows, 2013)
41		MissionForce: CyberStorm (Windows, 1996)
40		Star General (Windows, 1996)
40		Centerfold Squares (DOS, 1988)
40		Cyberstorm 2: Corporate Wars (Windows, 1998)
40		Star Hammer: Tactics (Windows, 2012)
40		Firezone (DOS, 1988)
40		Renegade Legion: Interceptor (DOS, 1990)
40		Dune III (DOS, 1995)
40		Star General (DOS, 1996)

Notes: Games similar to Alien River, Games like Alien River, 7t7 Studios, DOS, Strategy, Tactics, Sci-Fi, Futuristic, Turn-based, Top-down, Fixed, Flip-screen, PC, Game Similarities.