Single-player games like Pulse Citadel
Below are 10 single-player Steam games similar to Pulse Citadel, 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 Pulse Citadel page.
Ranked picks
- 1
Hex Core
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Hex Core is a short, incremental clicker-style defense game where you help PeteOS hold back waves of viruses until you can wipe them out for good. Spend resources to unlock a huge spread of upgrades, new mechanics, weapons, and research.
- 2
Get Stoned
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required.
Get Stoned is an incremental tower defense game where players design their own bullet loadouts. Gather resources, unlock unique boulders, and discover game-breaking synergies while defending your castle. It's time for everything to get stoned!
- 3
Cosmic Crusher
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Incremental game about protecting solar system. Destroy asteroids with a huge arsenal of weapons, upgrade your skills through a massive skill tree, and defend the solar system from hostile alien fleets. How far can you go?
- 4
Protect the Pit
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
A short incremental clicker game that blends the strategy of tower defense with the depth of sprawling upgrade trees. Build your own winding mazes to repel the oncoming hordes!
- 5
The Echoes of Mars
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
The Echoes of Mars is a voxel-style tower defence game. Defend your research base on Mars from ancient creatures by strategically placing towers and using advanced tech.
- 6
Unearthing Invasions
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
A 3d tower defense game set in space. Protect the last resource outposts from the ongoing Alien attacks! Can you hold out in these ever increasing difficult waves of enemies and protect the last of your resources and Energy?
- 7
THE 4 DEFENDERS
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
A game where you will command 4 heroes (TD) in the defense of Earth from an army of AIs. Create cannons, place them in strategic locations, and level up. Each stage increases in difficulty progressively. You will also command the 4 heroes' ships and can even count on the help of a super robot.
- 8
Pixel Orbit
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Incremental game about defending Earth from impending danger. Develop your Skill Tree to setup automatic turrets and various other defensive mechanisms.
- 9
Echoes of Vasteria
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required.
Guide (and mostly watch) Caleb the ever-marching hero in a pixel-art auto-adventure that fuses idle-incremental depth with side-scrolling action. Complete tasks, harvest loot, and let the game’s rich graphs and stats tell the story of your endless run.
- 10
Stupid Space Shooter
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required.
This game is a Stupid Space Shooter. Control your ship to blow up the bad guys, they are red. Levelup to gain upgrades to fight more bad guys