Single-player games like _OUR_:_Defense 2021
Below are 8 single-player Steam games similar to _OUR_:_Defense 2021, 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 _OUR_:_Defense 2021 page.
Ranked picks
- 1
ARC Alien Raid Combat
Single-player alternative to _OUR_:_Defense 2021 — playable solo, no multiplayer required. Shares Strategy and Indie with _OUR_:_Defense 2021.
A game based on the classic Tower Defense style, assemble your best combination to overcome obstacles, can you do it?
- 2
Our War: The Strongest Shield
Single-player alternative to _OUR_:_Defense 2021 — playable solo, no multiplayer required. Shares Strategy and Casual with _OUR_:_Defense 2021.
A grand and intense tower defense science fiction game, where you only need to purchase once to enjoy all the content of the game.
- 3
SYNCHRONIZERS: UNDEAD MARINES
Single-player alternative to _OUR_:_Defense 2021 — playable solo, no multiplayer required. Shares Strategy and Indie with _OUR_:_Defense 2021.
"SYNCHRONIZERS: UNDEAD MARINES" blends high-quality Three-Lane Tower Defense with Reverse Tower Defense gameplay. Command your units in a thrilling narrative reminiscent of a StarCraft and Plants Vs. Zombies fusion! Your choices will forge the path to victory—or defeat.
- 4
Ashes of the Singularity: Escalation
Single-player alternative to _OUR_:_Defense 2021 — playable solo, no multiplayer required. Shares Strategy with _OUR_:_Defense 2021.
A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat.
- 5
Commandos 2: Men of Courage
Single-player alternative to _OUR_:_Defense 2021 — playable solo, no multiplayer required. Shares Strategy with _OUR_:_Defense 2021.
Commandos 2: Men of Courage is a tactical action/strategy game set against the backdrop of World War II. Take control of an elite group of commandos who must venture deep into enemy territory and utilize their combined expertise to complete a series of mission-based objectives.
- 6
Commandos: Origins
Single-player alternative to _OUR_:_Defense 2021 — playable solo, no multiplayer required. Shares Strategy with _OUR_:_Defense 2021.
ALARM! You have been selected for a mission which will shape the fate of the entire world. Witness the very beginning of the legendary elite WWII force in Commandos: Origins. The long-awaited sequel to the Commandos series brings you right back to the foundation of the real-time tactics genre.
- 7
Taur
Single-player alternative to _OUR_:_Defense 2021 — playable solo, no multiplayer required. Shares Strategy and Indie with _OUR_:_Defense 2021.
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
Eximius: Seize the Frontline
Single-player alternative to _OUR_:_Defense 2021 — playable solo, no multiplayer required. Shares Strategy with _OUR_:_Defense 2021.
EXIMIUS is a FPS/RTS hybrid that focuses on squad-based combat. The game features an intense 5v5 multiplayer experience with each team comprising of 4 Squad Officers and one Commander.