65		Defenders of Time (Windows, 2014)
55		Freaking Meatbags (Windows, 2015)
55		McDroid (Windows, 2014)
54		Ancient Planet (Windows, 2015)
53		Revenge of the Titans (Windows, 2011)
53		Artificial Defense (Windows, 2016)
53		Zombie City Defense 2 (Windows, 2016)
52		Marz Rising (Windows, 2017)
43		Infinium Strike: Tactical Starship Defense (Windows, 2016)
42		Defense Grid: The Awakening (Windows, 2009)
42		Hypernova: Escape from Hadea (Windows, 2017)
41		Sol Survivor (Windows, 2010)
41		Power of Defense (Windows, 2010)

Notes: Games similar to Sentinel 3: Homeworld, Games like Sentinel 3: Homeworld, Origin8 Technologies Ltd., Strategy First, Inc., Windows, Strategy, Tactics, Sci-Fi, Futuristic, Tower Defense, Real-Time, PC, Game Similarities.