Single-player games like Cthulhu tower
Below are 16 single-player Steam games similar to Cthulhu tower, 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 Cthulhu tower page.
Ranked picks
- 1

Last Train Home
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required.
The Great War is over - the fight continues. Command a legion of soldiers, desperately trying to make their way home amidst the chaos of civil war. Lead them through the unforgiving wilderness onboard an armored train. Manage your crew and resources and try to survive.
- 2

Terrafort
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Action and Adventure with Cthulhu tower.
A procedurally generated sandbox survival game with RTS elements.
- 3

Brickwork - Tower Defense
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required.
Build your battlefield, brick by brick. Snap together towers, shape the path, and hold the line against waves of rogue toys. Every run reshuffles the board with procedurally generated layouts and new choices at every turn. Your world, your rules, your build.
- 4

Runeomicon: Training Room
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Action with Cthulhu tower.
Practice rune drawing outside the ritual. Runeomicon: Training Room lets you train across multiple difficulty levels and sharpen your skills without the threat of failure. Learn the patterns, build muscle memory, and prepare yourself for the relentless pressure of the full ritual in Runeomicon.
- 5

TriviOwl
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Action with Cthulhu tower.
Answer correctly to gain power—get it wrong, and you’ll empower the enemy. TriviOwl is a quiz-based tower defense game where you lay out the path and use your general knowledge to stop ridiculous hordes determined to devour the Trivia Tree.
- 6

Runeomicon
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Action with Cthulhu tower.
Perform a dark ritual with your own hands under relentless pressure. Draw runes in real time, defend the ritual from enemies trying to stop it, and upgrade your skills to unleash devastating magic. Summon ancient eldritch gods in this dark fantasy game driven by skill, strategy and constant tension.
- 7

Legendary Hoplite
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Action and Adventure with Cthulhu tower.
A combination of Action RPG and Tower Defense: slay monsters, find weapons, upgrade your armies, defend your base… Prevent humanity from extinction at the hands of monsters from Greek mythology and ancient tribes. Don't let them cross the gate, commander!
- 8

Alien Shooter TD
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Action with Cthulhu tower.
Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life!
- 9

Marginal act
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Adventure with Cthulhu tower.
The greate waves destroyed everything in the city, but the mysterious mechanism stopped the time in the game district. For all outside residents, the events within the segment stopped, but for the inhabitants of the district the time continues to go.
- 10

Bloody trains
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Action with Cthulhu tower.
Sitcom train conductor blowing heads simulator
- 11

Why pizza?
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Action with Cthulhu tower.
Baba is you meet Getting over it to deliver the best pizza and try not to get bankrupt!
- 12

Cthulhu pub
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Adventure with Cthulhu tower.
In Cthulhu pub, you can build your own pub or restaurant. Create cute characters, creepy monsters and establish a small cute pub or make a large castle with monsters, humans, and ancient Gods.
- 13

KOBOLOK
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Adventure with Cthulhu tower.
KOBOLOK is an ethnic PS1 style horror game based on an Eastern European fairytale about round bread "Kolobok" aka "O Koblížkovi" aka "Pannkauken".
- 14

Bakeborough
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required.
In Bakeborough, a Bakery RPG, you can take out your eye to see less.
- 15

Frogvival
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required.
Frogvival is a survival game in which you eat an animal - you add its DNA to you!
- 16

Where is Drake?
Single-player alternative to Cthulhu tower — playable solo, no multiplayer required. Shares Adventure with Cthulhu tower.
Your new favourite horror game where you need to find Drake the pirate among other imposters