Single-player games like Operation: Horumus
Below are 8 single-player Steam games similar to Operation: Horumus, 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 Operation: Horumus page.
Ranked picks
- 1

FleetRush
Single-player alternative to Operation: Horumus — playable solo, no multiplayer required. Shares Strategy and Indie with Operation: Horumus.
Real-time naval strategy. Build your fleet, defend your base, and destroy the enemy. At your command — ships, submarines, aircraft, and defensive structures.
- 2

Warnet
Single-player alternative to Operation: Horumus — playable solo, no multiplayer required. Shares Strategy and Indie with Operation: Horumus.
Outmaneuver, outbuild, outthink. In Warnet, the map is your ally and your enemy - master its properties, and you master victory.
- 3

Conquerline
Single-player alternative to Operation: Horumus — playable solo, no multiplayer required. Shares Strategy and Indie with Operation: Horumus.
Conquerline is a real-time strategy and base-defense game where you build and evolve your civilization across eras. Expand your settlement, manage resources, grow your army, unlock new technologies, and use powerful Edicts to shape tactics and secure victory.
- 4

No One Gets Through
Single-player alternative to Operation: Horumus — playable solo, no multiplayer required. Shares Strategy and Indie with Operation: Horumus.
Shape enemy routes with freely placed towers and grow your defenses through roguelite upgrades. Choose one of three cards between campaign stages, combine five tower types and ten specializations, and hold the line across three chapters, Boss Challenge and Endless modes.
- 5

Void TD
Single-player alternative to Operation: Horumus — playable solo, no multiplayer required. Shares Strategy and Indie with Operation: Horumus.
Build powerful defenses, collect loot, combine effects, and survive evolving waves from the void in a tower defense game driven by ARPG-inspired buildcrafting and persistent progression.
- 6

Next Level: Tower Defense
Single-player alternative to Operation: Horumus — playable solo, no multiplayer required. Shares Strategy and Indie with Operation: Horumus.
Race-based tower defense. Build your army, defend your king, and send waves at your rivals. Up to 8-player FFA, 2v2 & 4v4 teams, and singleplayer. Crossplay on Windows, Linux, macOS & Steam Deck.
- 7

Crisis Commander: Strait Of Hormuz
Single-player alternative to Operation: Horumus — playable solo, no multiplayer required. Shares Strategy and Indie with Operation: Horumus.
A satirical 2D strategy game set in the Strait of Hormuz. Control fleets, play cards, and manipulate oil prices. Meanwhile, your incompetent general keeps issuing increasingly unhinged orders. Keep the price of oil where he wants it, or the world will pay the price.
- 8

Little Kingdom RTS
Single-player alternative to Operation: Horumus — playable solo, no multiplayer required. Shares Strategy and Indie with Operation: Horumus.
Little Kingdom RTS is an indie real-time strategy game set in a medieval fantasy world. Gather resources, build settlements, raise walls, and grow your small kingdom. Command an army of knights, archers, and mages to fight off rival kingdoms, orcs, and undead.