Single-player games like GROSS
Below are 16 single-player Steam games similar to GROSS, 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 GROSS page.
Ranked picks
- 1
Out of Ammo: Death Drive
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
Death Drive is the apocalyptic sequel to Out of Ammo, a hybrid VR Tower Defense / FPS strategy game. Embark on a wild road trip developed exclusively for VR. Build defenses, scavenge scrap and and kill undead zombie hordes using an arsenal of firearms, melee weapons and mounted defenses.
- 2
Haunt Monster
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
Haunt Monster is a FPS Action Roguelike game in a random generated environment. Build, defend and survive waves of zombies, monsters and aliens. Play solo or co-op with a friend to survive.
- 3
State of Decay 2: Juggernaut Edition
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action with GROSS.
The dead have risen and civilization has fallen. Now it's up to you to gather survivors, scavenge for resources and build a community in a post-apocalyptic world – a world where you define what it means to survive in this ultimate zombie survival simulation.
- 4
Blood Waves
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
Hardcore and bloody shooter where you will have to repel the attacks of the living dead using the destroying traps, defensive barricades and also weapon of close and long-range combat.
- 5
They Are Billions
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Strategy with GROSS.
They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?
- 6
Shadow Warrior
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action with GROSS.
Shadow Warrior is a bold reimagining of the classic 3D Realms’ shooter from independent developer Flying Wild Hog (Hard Reset) starring the legendary and quick-witted warrior Lo Wang.
- 7
VERSUS SQUAD
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action with GROSS.
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!
- 8
How to Survive 2
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action with GROSS.
Dead or Alive? Make up your mind, stranger. We don’t like that undead business here in Louisiana…Survive solo or with friends as you look to fulfill your basic needs of food, water and shelter, crafting your own tools and weapons while you secure your camp and face flesh hungry zombies.
- 9
Orcs Must Die!
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
Slice them, burn them, skewer them, and launch them - no matter how you get it done, orcs must die in this fantasy action-strategy game from Robot Entertainment.
- 10
Sanctum
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
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.
- 11
Orcs Must Die! 2
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
You’ve tossed, burned and sliced them by the thousands – now orcs must die more than ever before! Grab a friend and slay orcs in untold numbers in this sequel to the 2011 AIAS Strategy Game of the Year from Robot Entertainment.
- 12
Sanctum 2
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
- 13
X-Morph: Defense
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.
- 14
SENTRY
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
- 15
Plants vs. Zombies GOTY Edition
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Strategy with GROSS.
Zombies are invading your home, and the only defense is your arsenal of plants! Armed with an alien nursery-worth of zombie-zapping plants like peashooters and cherry bombs, you'll need to think fast and plant faster to stop dozens of types of zombies dead in their tracks.
- 16
Orcs Must Die! 3
Single-player alternative to GROSS — playable solo, no multiplayer required. Shares Action and Strategy with GROSS.
Slice, burn, toss, zap, grind and gib massive hordes of repugnant orcs in this long-awaited successor to the award-winning Orcs Must Die! series.