Turn-based strategy and tactics defines the gameplay for sci-fi game Fallen Haven. The game centers around humanity's defense of colony planet New Haven on the fringes of the galactic battleground. Taurans, the opposing alien race, arrive in force with dropships and advanced weaponry to try and unseat the well-entrenched human foe.

Gameplay begins with a strategic planning phase where research and development and logistical planning takes place. The tactical gamplay phase places more emphasis on fire and movement of a wide variety of human and alien infantry, vehicles, artillery, and flyers. Players can also build defensive fortifications, roadways, and bases to bolster their chances at victory.