Single-player games like Underwater Wars
Below are 8 single-player Steam games similar to Underwater Wars, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Underwater Wars page.
Ranked picks
- 1
Xenonauts
Single-player alternative to Underwater Wars — playable solo, no multiplayer required. Shares Strategy and Indie with Underwater Wars.
Xenonauts is a strategy game in which you control a multi-national military organisation defending a Cold War-era Earth from alien invasion, using small squads of persistent soldiers to eliminate the extraterrestrials and recover their technology in turn-based ground combat.
- 2
Every Day We Fight
Single-player alternative to Underwater Wars — playable solo, no multiplayer required. Shares Strategy and Early Access with Underwater Wars.
Caught in a time loop, your band of resistance fighters is humanity’s last hope. Real-time exploration meets turn-based tactics and roguelite strategy as you learn new abilities, seek out new weapons, and develop new techniques to overcome the mysterious alien threat.
- 3
Warhammer 40,000: Armageddon (Classic)
Single-player alternative to Underwater Wars — playable solo, no multiplayer required. Shares Strategy with Underwater Wars.
In this hex-based, turn-based strategy game, players will lead the Imperial forces of the Armageddon Steel Legion and Space Marines from a variety of Chapters against the Ork invasion through over 30 scenarios, on the hostile terrain of the planet and its gigantic Hive Cities.
- 4
X-COM: Terror From the Deep
Single-player alternative to Underwater Wars — playable solo, no multiplayer required. Shares Strategy with Underwater Wars.
The war continues... X-COM: UFO Defense brought you to a galactic battlefield. X-COM: Terror from the Deep brings the alien terror into a totally new dimension.Seeking to take advantage of a weakened Earth, X-COM's deep space foes unexpectedly change strategy and launch a powerful second front against planet Earth.
- 5
Battlestar Galactica Deadlock
Single-player alternative to Underwater Wars — playable solo, no multiplayer required. Shares Strategy with Underwater Wars.
In Battlestar Galactica Deadlock™ you’ll take command of the Colonial Fleet in defense of the Twelve Colonies during the First Cylon War. Lead many different types of ships in this 3D tactical game. Every decision counts, your strategy will be vital – can you ensure mankind’s survival?
- 6
Star Hammer: The Vanguard Prophecy
Single-player alternative to Underwater Wars — playable solo, no multiplayer required. Shares Strategy with Underwater Wars.
Take command of Naval Strike Group 7 and lead your fleet to victory in full 3D tactical space combat. Star Hammer: The Vanguard Prophecy is a sci-fi strategy saga that will test your skills as both capital assault ship Captain and naval fleet Commander.
- 7
Lost Eidolons
Single-player alternative to Underwater Wars — playable solo, no multiplayer required. Shares Strategy and Indie with Underwater Wars.
Lost Eidolons is a turn-based tactical RPG with a gripping cinematic narrative, set in a waning empire riven by civil war. Take on the role of a charming mercenary captain, Eden, and lead his band of allies through epic encounters on a classic turn-based battlefield.
- 8
Horizon
Single-player alternative to Underwater Wars — playable solo, no multiplayer required. Shares Strategy and Indie with Underwater Wars.
Horizon is a turn-based space strategy game of galactic exploration and conquest in which you are in control of humanity’s destiny. You will explore deep space, find new frontiers and discover alien artifacts hidden on long-abandoned planets.