67		Creeper World 3: Arc Eternal (Windows, 2013)
66		Unstoppable Gorg (Windows, 2012)
65		Eufloria HD (Windows, 2014)
65		Anomaly: Warzone Earth (Windows, 2011)
65		Anomaly 2 (Windows, 2013)
64		Sword of the Stars II: Lords of Winter (Windows, 2011)
64		Anomaly: Warzone Earth HD (Windows, 2013)
64		Anomaly: Korea (Windows, 2013)
63		Colony Defense (Windows, 2010)
63		AI War: Fleet Command (Windows, 2009)
63		Machines at War 3 (Windows, 2014)
63		Z (Windows, 2014)
63		Meridian: New World (Windows, 2014)
63		Aeon Command (Windows, 2014)
63		Anomaly Defenders (Windows, 2014)
62		Space War Commander (Windows, 2009)
62		Imperium (Windows, 2015)
62		Devouring Stars (Windows, 2015)
62		Eufloria (Windows, 2009)
61		Disney's Treasure Planet: Battle at Procyon (Windows, 2002)
61		Dyson (Windows, 2008)
61		Z (DOS, 1996)
60		Left Behind: Eternal Forces (Windows, 2006)
60		Times of Conflict (Windows, 2000)
60		Paranoia! (DOS, 1995)
60		War Wind II: Human Onslaught (Windows, 1997)
60		Machines (Windows, 1999)
60		Outpost 2: Divided Destiny (Windows, 1997)
60		Malvinas 2032 (Windows, 1999)
60		Space Clash: The Last Frontier (Windows, 1999)
60		Lord Monarch Online (Windows, 1997)
60		Jeff Wayne's The War of the Worlds (Windows, 1998)
60		Navalia (Windows, 2017)
60		Galactic Dream: Rage of War (Windows, 2007)
60		AirMech Strike (Windows, 2017)
60		Machines at War (Windows, 2007)
60		Boundless Planet (Windows, 2006)
60		Pax Solaris (Windows, 2005)
60		Total Control (DOS, 1996)
60		Arrakis (DOS, 2000)
60		WarBreeds (Windows, 1998)
60		Nether Earth Remake (Windows, 2002)
60		Dominium (DOS, 1992)
55		Naval War: Arctic Circle (Windows, 2012)
53		Particle Fleet: Emergence (Windows, 2016)
52		Istrolid (Windows, 2016)
51		Shattered Suns (Windows, 2008)
51		First Strike: Final Hour (Windows, 2017)
51		Conquest: Frontier Wars (Windows, 2001)
51		Auralux: Constellations (Windows, 2016)
51		Carrier Command (DOS, 1989)
50		Star Fleet II: Krellan Commander (DOS, 1989)
50		Bionic Attack (Windows, 2017)
50		M.A.X. 2: Mechanized Assault & Exploration (Windows, 1998)
50		Strain Tactics (Windows, 2017)
50		The Outforce (Windows, 2001)
50		Cyberstorm 2: Corporate Wars (Windows, 1998)
44		Supreme Commander 2 (Windows, 2010)
43		Ground Control (Windows, 2000)
43		Supreme Commander (Windows, 2007)
43		Total Annihilation (Windows, 1997)
43		Planetary Annihilation (Windows, 2014)
42		Planetary Annihilation: Titans (Windows, 2015)
42		Blue Libra (Windows, 2015)
42		Dune II: The Building of a Dynasty (DOS, 1992)

Notes: Games similar to Planets Under Attack, Games like Planets Under Attack, Targem Games, TopWare Interactive AG, Windows, Strategy, Tactics, Sci-Fi, Futuristic, Real-Time, Top-down, PC, Game Similarities.