Single-player games like SYNCHRONIZERS: UNDEAD MARINES
Below are 9 single-player Steam games similar to SYNCHRONIZERS: UNDEAD MARINES, 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 SYNCHRONIZERS: UNDEAD MARINES page.
Ranked picks
- 1
The Fall of Aether Station
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Action and Strategy with SYNCHRONIZERS: UNDEAD MARINES.
Customize your Ships, Upgrade your fleet, and Command your way to victory in this ruthless rogue-lite tower defense/real time strategy hybrid. Take on an enemy that learns from your moves and adjusts its own path. Do you have what it takes to persevere?
- 2
Line Of Defense Tactics - Tactical Advantage
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Action and Strategy with SYNCHRONIZERS: UNDEAD MARINES.
A real-time strategy combat game based on the world of the Line Of Defense. Command a team of four Galactic Command marines in highly classified missions in space and on planets.
- 3
IRON GUARD
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Action and Strategy with SYNCHRONIZERS: UNDEAD MARINES.
A sci-fi roomscale VR Tower Defense game. Strategize to destroy waves of rogue robots and assist the powerful turrets with a handheld drone. Build and collect resources and help evacuate your crew from the alien planet.
- 4
Swarm Queen
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Strategy and Indie with SYNCHRONIZERS: UNDEAD MARINES.
A quick-to-learn but challenging real-time strategy game where you spawn an army of space-bugs that control themselves.
- 5
Aliens: Dark Descent
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Action and Strategy with SYNCHRONIZERS: UNDEAD MARINES.
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.
- 6
Iron Marines Invasion
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Action and Strategy with SYNCHRONIZERS: UNDEAD MARINES.
Prepare to take off, soldier! The galaxy needs your strategy! Prove your RTS expertise, explore an entire galaxy and defend it from a threatening invasion.
- 7
Taur
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Action and Strategy with SYNCHRONIZERS: UNDEAD MARINES.
Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?
- 8
Atom Zombie Smasher
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Strategy and Indie with SYNCHRONIZERS: UNDEAD MARINES.
The zombie apocalypse is upon us and it's up to you to evacuate everyone before they fall prey to the undead. Conduct massive rescue operations with a helping hand from snipers, artillery crews, orbital bombardments, and more.
- 9
ARKADIANAX
Single-player alternative to SYNCHRONIZERS: UNDEAD MARINES — playable solo, no multiplayer required. Shares Action and Indie with SYNCHRONIZERS: UNDEAD MARINES.
Shoot your way through hordes of enemy ships, tanks, mine fields, wind mills, lazer beams, massive boss fights and software bugs, all in a multidimensional shoot em up like never seen before!