Single-player games like Iron Marines Invasion
Below are 16 single-player Steam games similar to Iron Marines Invasion, 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 Iron Marines Invasion page.
Ranked picks
- 1
Iron Marines
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Action and Strategy with Iron Marines Invasion.
Real-time strategy battles in amazing sci-fi worlds! Command brave soldiers, mighty mechas and powerful aliens to face the greatest challenges in hostile alien worlds. The galaxy needs you!
- 2
Nexus - The Jupiter Incident
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy and Indie with Iron Marines Invasion.
Ambitious megacorporations monopolize the conquest of space and the colonization of the solar system. At the very edge of the solar system, the companies make a discovery that will shift the technological advantage and upset the balance. And so a new conflict is born: "The Jupiter Incident."
- 3
Aliens: Dark Descent
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Action and Strategy with Iron Marines Invasion.
Drop into the gripping journey of Aliens: Dark Descent, a squad-based, single-player action game in the iconic Alien franchise. Lead your soldiers in real-time to stop a new and terrifying kind of Xenomorph outbreak on Planet Lethe.
- 4
Warhammer Age of Sigmar: Realms of Ruin
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Action and Strategy with Iron Marines Invasion.
Wage a campaign of brutal conquest in this realm-shattering real-time strategy game set in the Warhammer Age of Sigmar universe. Become a warlord and lead four unique factions to conquer the wild and savage Realm of Ghur in tense and tactical battles.
- 5
Battlefleet Gothic: Armada 2
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy with Iron Marines Invasion.
Battlefleet Gothic: Armada 2 is the new real-time strategy game adapted from Games Workshop’s famous tabletop game that portrays the epic space battles of the Warhammer 40,000 universe.
- 6
Wargame: Airland Battle
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy and Indie with Iron Marines Invasion.
2 SIDES, 12 NATIONS, 750 UNITS: THE STRATEGY GAME REFERENCE IS BACK! Richer, more beautiful and more accessible, Wargame AirLand Battle is the sequel to the explosive real-time strategy game Wargame European Escalation! 1985.
- 7
Sins of a Solar Empire: Trinity®
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy and Indie with Iron Marines Invasion.
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
- 8
Company of Heroes: Opposing Fronts
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Action and Strategy with Iron Marines Invasion.
The next chapter in the #1 rated RTS franchise thrusts players into a hellish war torn landscape to command two battle-hardened armies in relentless campaigns for honor and country. Players lead the tenacious British 2nd Army during the heroic World War II liberation of Caen, France, and command the German Panzer Elite as they struggle...
- 9
Plants vs. Zombies™: Replanted
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy with Iron Marines Invasion.
The classic Plants vs. Zombies returns in glorious HD! The original battle between Plants and Zombies is back — bigger, brighter, and crazier than ever before! Experience the game that started it all, now remastered with stunning HD graphics and packed with new secrets and content to uncover.
- 10
Kingdom Rush - Tower Defense
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy with Iron Marines Invasion.
Get ready for an epic journey to defend your kingdom against hordes of orcs, trolls, evil wizards and other nasty fiends using a vast arsenal of towers and spells at your command!Fight on forests, mountains and wastelands, customizing your defensive strategy with different tower upgrades and specializations!
- 11
Kingdom Rush 5: Alliance TD
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy and Indie with Iron Marines Invasion.
While a formidable evil emerges, an unexpected alliance is taking shape! It will take the finest warriors of Linirea and the relentless Dark Army to stop it. Beware! Though they may journey side by side the ever-changing winds of fate could swiftly alter their course.
- 12
Kingdom Rush Frontiers - Tower Defense
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy with Iron Marines Invasion.
Command your troops through an epic (mis)adventure as you defend exotic lands from dragons, man-eating plants, and ghastly denizens of the underworld -all with flashy new towers, levels, heroes, and more goodies to help you crush your foes in this Fantasy Action Tower Defense game!
- 13
Kingdom Rush Vengeance - Tower Defense
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy with Iron Marines Invasion.
It's payback time! Lead your mighty dark army and make the Kingdom tremble with every step. Build powerful towers, choose your arsenal for destruction, and find the deadliest combination - train legendary heroes and lead them to victory!
- 14
Kingdom Rush Origins - Tower Defense
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy and Indie with Iron Marines Invasion.
Command your elven army and defend mystical lands from sea serpents, evil sorcerers, and wave after wave of gnoll tribesman, all with the help of brand-spankin’ new towers, heroes, and spells to fend off every last baddie.
- 15
Legends of Kingdom Rush
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Strategy and Indie with Iron Marines Invasion.
RPG turn-based combat game with deep tactics and bad jokes! Do you have what it takes to save the kingdom?
- 16
Kingdom Rush 6: Genesis TD
Single-player alternative to Iron Marines Invasion — playable solo, no multiplayer required. Shares Action and Strategy with Iron Marines Invasion.
Kingdom Rush 6: Genesis is a fantasy tower defense strategy game that takes you back in time to the early days of the Kingdom with bold new twists. Build towers, command heroes, and stop Vez’nan’s corruption before it tears the kingdom apart!