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

Everhex
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Build one tower. Hold endless waves. Spend what each wave drops on damage, crit and six weapon mounts firing at once — then bank the run into a 453-node passive tree that carries into the next. A premium incremental tower defence: no ads, no timers, no energy bars.
- 2

Emojis vs Zombies
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Emojis vs Zombies is an Idle Desktop Companion Zombie Defense Game! Open packs, Collect Emoji Defenders, Upgrade your squad or base and survive endless waves even while you're AFK or working!
- 3

BOYKISSER IS COMING
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
A simple tower defense game where you need to protect your house from Boykissers
- 4

Core Idle TD
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Protect your base against endless waves. Collect cores from bosses, unlock permanent upgrades, and prestige resets to push further. Refine your setup, survive the swarms, and climb the global leaderboards.
- 5

Glorpnauts
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Build it. Automate it. Watch it grow! Glorpnauts is a space incremental where you mine asteroids, expand your fleet, build an automated economy and defend it from pirates. Prestige for permanent upgrades, explore new star systems and turn a tiny base into a thriving space operation.
- 6

Barely Outnumbered
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Start with one tower. Kill monsters, earn Scrap, and spend it on more towers and better upgrades. An incremental tower defense where your fortress survives between assaults. Pause whenever you need to plan, then see how far you can push it. Prestige when you're ready to start again, stronger.
- 7

Clickore Station
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Defend your station with a click and survive as long as you can. Destroy the enemies, mine the deposit, then trade your ore for permanent upgrades. Every world has its own ore, its own enemies and its own rules.
- 8

Sir, We Have an Orc Problem
Single-player alternative to Pulse Citadel — playable solo, no multiplayer required. Shares Strategy with Pulse Citadel.
Sir, We Have an Orc Problem is an incremental-style tower defense game where you face an overwhelming number of orcs. Greet them with even more bullets, bombs and lasers!
- 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