Single-player games like Atom Zombie Smasher
Below are 15 single-player Steam games similar to Atom Zombie Smasher, 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 Atom Zombie Smasher page.
Ranked picks
- 1

Xeno Rangers
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy and Indie with Atom Zombie Smasher.
In this Coop Platformer Defense game, you must defend your HQ from enemy hordes by building your base and defenses wisely, while you fight using weapons & items acquired and upgraded along the way.
- 2

HexTD
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy with Atom Zombie Smasher.
HexTD is a tower defense game where players can choose from 3 classes to defend their base. Deploy your machines, soldiers or elementals to create the enemies path and guard against powerful bosses, playing solo or with a friend to create a new experience in tower defense genre.
- 3

Before the Walls Break
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy and Indie with Atom Zombie Smasher.
Build your village, fortify your walls, and survive relentless waves of enemies in this strategy tower defense game with resource management and active battlefield abilities.
- 4

Cats on Duty: Prologue
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy and Indie with Atom Zombie Smasher.
Cats on Duty: Prologue is a purr-fect blend of RTS, tower defense, and match-3 game genres. The Prologue contains the whole first chapter of Cats on Duty spread over 10 captivating levels, each showcasing a unique challenge and certain game feature. Enjoy the meow-nificent battle!
- 5

Commandos: Origins
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy with Atom Zombie Smasher.
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.
- 6

Attack on Toys
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy and Indie with Atom Zombie Smasher.
Relive Your Childhood Toys comes to life! Build your Army Toys, make battle scenario, watch the Toys battling each other, and customize your play with Attack on Toys Toy Box. Command your Army Toys to fight againts another toys strategically and keep them alive during battle!
- 7

D.O.T. Defence
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy with Atom Zombie Smasher.
Welcome to the frontlines! Build towers, muster armies, and conquer the map. Challenge yourself in the single-player campaign following the Chroma Wars, survive relentless waves in solo defense, or battle it out in local matches against friends and AI bots. Victory comes with the last HQ standing!
- 8

Cats on Duty
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy and Indie with Atom Zombie Smasher.
Cats on Duty is a🐱 purr-fect blend of RTS, tower defense, game genres. Manage two game fields, upgrade adorable cat towers, and watch your fluffy warriors bravely defend against foes. 🐾
- 9

Left 4 Dead
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required.
From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.
- 10

Skin Deep
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Indie with Atom Zombie Smasher.
Skin Deep is an immersive first-person shooter. We got sneezing. We got things getting stuck in your feet. Stalk through a vast non-linear starship and sneak, subvert, and sabotage to survive in this stellar sandbox. You're outnumbered, outgunned, and have no shoes. Welcome to Skin Deep!
- 11

Thirty Flights of Loving
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Indie with Atom Zombie Smasher.
This surprising first-person story tells the tale of a heist gone wrong. Encounter high-flying schemers, lovelorn criminals, and more stray kittens than you can shake a stick at.
- 12

Quadrilateral Cowboy
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Indie with Atom Zombie Smasher.
When you have a top-of-the-line hacking deck armed with a 56.6k modem and a staggering 256k RAM, it means just one thing: you answer only to the highest bidder.
- 13

Flotilla
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy and Indie with Atom Zombie Smasher.
Lead your orbital battleships to victory in Flotilla! Fight, trade, and explore new planets in your journey through the galaxy. Featuring tactically rich 3D combat, flank and surprise the enemy from any direction. When the dust settles, generate another randomized universe for a brand new adventure!
- 14

Air Forte
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required.
Air Forte is a high-altitude game of math, vocabulary, and geography. Compete with friends or fly solo in the various arenas. Good luck, pilot! Play with friends: Up to four people can play Air Forte together. Find out who's the best pilot!Stage variety: Play through multiple stages that explore math, vocabulary, and geography.
- 15

Flotilla 2
Single-player alternative to Atom Zombie Smasher — playable solo, no multiplayer required. Shares Strategy and Indie with Atom Zombie Smasher.
Flotilla 2 is a VR tactical game about big battleships in outer space.