Single-player games like Unstoppable Gorg
Below are 17 single-player Steam games similar to Unstoppable Gorg, 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 Unstoppable Gorg page.
Ranked picks
- 1

DG2: Defense Grid 2
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Strategy and Indie with Unstoppable Gorg.
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.
- 2

Defense Grid: The Awakening
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Strategy and Indie with Unstoppable Gorg.
Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.
- 3

Revenge of the Titans
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Strategy with Unstoppable Gorg.
The ultimate mash-up of Real-time Strategy and Tower Defense!
- 4

Anomaly Defenders
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Strategy with Unstoppable Gorg.
Anomaly Defenders is the closing installment of the Anomaly series. The original incarnation of the Tower Offense sub-genre had players controlling humans fighting alien invaders. Now, the tables have turned. The human counterattack is underway and the alien homeworld is under threat.
- 5

Anomaly: Warzone Earth
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Strategy with Unstoppable Gorg.
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
- 6

Fieldrunners 2
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Strategy with Unstoppable Gorg.
Get ready to DEFEND THE WORLD! The biggest sequel in tower defense history is finally here: Fieldrunners 2 has arrived! From Subatomic Studios, creators of the award winning classic strategy game comes an all new adventure that was years in the making.
- 7

Sol Survivor
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Strategy and Indie with Unstoppable Gorg.
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!
- 8

Beware Planet Earth
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Strategy and Indie with Unstoppable Gorg.
Beware Planet Earth! is a beguiling mix of classic tower defense and time management coming to PC via Steam for the first time. Save your cows from the Martian invasion by building an effective defense using towers, traps and objects, and also by firing your Zapper directly at the invading force of little green men!
- 9

Orcs Must Die!
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Strategy with Unstoppable Gorg.
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

Orcs Must Die! 2
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Strategy with Unstoppable Gorg.
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.
- 11

Prime World: Defenders
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Strategy and Indie with Unstoppable Gorg.
Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.
- 12

X-Morph: Defense
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Strategy with Unstoppable Gorg.
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.
- 13

Orcs Must Die! 3
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Strategy with Unstoppable Gorg.
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.
- 14

Tower Tactics: Liberation
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Strategy and Indie with Unstoppable Gorg.
We fused deck-building roguelikes and tower defenses in a way never seen before - deploy your towers, collect valuable trinkets and cast powerful spells to defend yourself against the Salkoth!
- 15

Spirits of the Hellements - TD
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Strategy with Unstoppable Gorg.
Assemble legendary Spirits and defend against the endless hordes of Hell. A tower defense where you must shape the battlefield and create a maze using the three Hellements. Use Fire, Lightning, and Wind tiles to trap your enemies, or augment your defenses.
- 16

Plants vs. Zombies GOTY Edition
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Strategy with Unstoppable Gorg.
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.
- 17

Shattered Horizon
Single-player alternative to Unstoppable Gorg — playable solo, no multiplayer required. Shares Action and Indie with Unstoppable Gorg.
Experience zero gravity space combat in this innovative FPS. Now includes the Last Stand pack: play all game modes in single player with bots.