Single-player games like Defense Zone
Below are 9 single-player Steam games similar to Defense Zone, 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 Defense Zone page.
Ranked picks
- 1
Defense Zone 2
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
Stunning detail of levels, in-depth gameplay, finely tuned balance of all levels and turrets. The new, engaging levels are even more stunning and impressive.
- 2
Defense Zone 3 Ultra HD
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
The sequel to the hit strategy game, with new weapons, landscapes, and options.
- 3
Sentinel 3: Homeworld
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
The biggest installment of the award winning Sentinel sci-fi tower defense series now on PC!Take the fight to the alien homeworld and unleash a massive arsenal of weaponry. Get up close and personal on the battlefield in your power armor to execute devastating attacks and support your defenses! * An epic campaign across 20 levels.
- 4
War in a Box: Paper Tanks
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
Build your towers of paper before they get out of the box and make a big mess in the room. Manage the turrets, upgrade and be careful where you put them... every decision can be fatal! Watch out for the air units, they have a different route!
- 5
Last Hope - Tower Defense
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
Zombie Tower Defense: Join the ongoing war, in an open world, against the undead zombie horde. Choose between multiple powerful heroes all with unique epic gear and skills! With the wide variety of towers you can create your own perfect strategy.
- 6
Fort Defense
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
All hands on deck! Pirate armada dead ahead! Take part in an uncompromising struggle repelling freebooters' assaults. Watch out, the enemy may catch the tide for ruining your fortress. Build towers, collect crystals, upgrade spells and believe in your victory!
- 7
Sanctum
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.
- 8
Sol Survivor
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
Jump in to intense turret defense action with Sol Survivor! Build turrets to defend your colony and the innocent colonists within. Smash enemies with volleys of actively-controlled orbital support. Play with friends in co-operative and competitive multiplayer matches or test your mettle against our new Survival mode!
- 9
DG2: Defense Grid 2
Single-player alternative to Defense Zone — playable solo, no multiplayer required. Shares Strategy and Indie with Defense Zone.
Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.