Single-player games like Zombie Builder Defense
Below are 12 single-player Steam games similar to Zombie Builder Defense, 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 Zombie Builder Defense page.
Ranked picks
- 1

VERSUS SQUAD
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
Versus Squad is a fast action twin-stick shooter from the creator of Nation Red. Build your own sandbox defense and battle thousands of zombie mutants in top down combat! Face up to a dozen bosses. Simultaneously. Collect loot, build and repair. Play single player, on-line or local coop!
- 2

Zombie Builder Defense 2
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
Defend against hordes of zombies in this fun filled top-down shooter. Build and upgrade your base, unlock powerful guns, and take on challenging bosses with up to 4 players in online co-op. Play minigames to earn bonuses and survive the zombie apocalypse one night at a time!
- 3

Frontline Zed
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
Defend your fortified barricade by night, collect weapons and conduct repairs by day. Survive long enough to make your way through America and towards rescue.
- 4

10 Miles To Safety
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
The Apocalypse has arrived and your goal is simple: Make it 10 miles to safety through a limitless procedurally-generated world overrun with The Infected and packed with the tools and weapons to fight them.
- 5

POSTAL Redux
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
POSTAL Redux is a high definition remake of the classic dark and surreal twin-stick isometric shooter. Take control of The POSTAL Dude as he fights to survive in a world gone mad with violence.
- 6

SAS: Zombie Assault 4
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
Purge the undead! Intense action-shooter with deep rpg elements, including upgradeable guns and armor, unique class skills, and class special abilities. Entire game can be played single player or as a 4-player online co-op game, including PvP events like Last Man Standing.
- 7

HumanitZ
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
HumanitZ is an isometric, open-world sandbox survival game set in a world ended by a zombie outbreak. Survive alone or with friends by scavenging, crafting, building, and fighting to last as long as ‘humanly’ possible. You can’t change the past, but you can fight for the future of humanity.
- 8

Nation Red
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
Nation Red is an ultra fast infinite play arena-based shooter providing an exceptional close-quarter battlefield experience. Fight thousands of zombie mutants and their bosses in frantic bloody gameplay while earning close to 100 perks. Fight in Barricade, Survival or Free Play mode.
- 9

Yet Another Zombie Defense
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.
- 10

Yet Another Zombie Defense HD
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required. Shares Action with Zombie Builder Defense.
Top-down zombie shooter with tower defense elements featuring up to 4 players local and online co-op. Build your base by day, defend it by night, put your skills to the test to stay alive as long as possible! Darkness is coming. How long can YOU survive?
- 11

Observe and Report
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required.
The ultimate surveillance game. Monitor camera feeds solo, team up in multiplayer, or versus friends. Detect anomalies, report suspicious activities, and ensure security across diverse locations. Your watchful eyes make the difference!
- 12

Store Wars: Multiplayer Shop Simulator
Single-player alternative to Zombie Builder Defense — playable solo, no multiplayer required.
Play solo or with up to 16 friends in a chaotic grocery store showdown! Manage, grow, and compete against rival stores in a fun, lighthearted battle of wits and strategy. Who will be the ultimate grocery tycoon? Sabotage, upgrade, and outwit your friends in this unpredictable simulator!