Single-player games like Colossal Citadels
Below are 8 single-player Steam games similar to Colossal Citadels, 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 Colossal Citadels page.
Ranked picks
- 1

Rise of Realms
Single-player alternative to Colossal Citadels — playable solo, no multiplayer required. Shares Strategy and Simulation with Colossal Citadels.
Rise of Realms is a 4X RPG, for 1-6 players, in a medieval fantasy setting. Command an empire and recruit heroes to lead your armies. Use your tactical abilities to conquer the lands and reshape them in your image. Wishlist now.
- 2

Dominions 6 - Rise of the Pantokrator
Single-player alternative to Colossal Citadels — playable solo, no multiplayer required. Shares Strategy with Colossal Citadels.
In Dominions 6 you take control of a powerful being that rules a nation and aspires to godhood. The type of Pretender Gods can vary from magically powerful arch mages to old dragons or an enormous tree. Dominions is a deep 4x turn based strategy game with a very large variety of spells and units.
- 3

Heroes of Science and Fiction
Single-player alternative to Colossal Citadels — playable solo, no multiplayer required. Shares Strategy and Indie with Colossal Citadels.
A turn-based sci-fi strategy that combines exploration and exciting clashes on the battlefield. Take control over several different species, raise powerful armies for your heroes and destroy your opponents! This HoMM-like is set in a scifi universe, with new mechanics on top of the classic formula.
- 4

Crucible Of Time
Single-player alternative to Colossal Citadels — playable solo, no multiplayer required. Shares Strategy and Indie with Colossal Citadels.
A retro 4X game inspired by classic versions of the genre. Lead your people from a small nomadic tribe into a globe-spanning space-fairing civilization. Can your empire survive the Crucible Of Time?
- 5

Sarmatian Heroes
Single-player alternative to Colossal Citadels — playable solo, no multiplayer required. Shares Strategy and Indie with Colossal Citadels.
Sarmatian Heroes is a turn-based strategy RPG where you explore the world, develop heroes, command armies, build fortified cities, and fight tactical battles on hex-based battlefields in an alternate-history setting.
- 6

ZEPHON
Single-player alternative to Colossal Citadels — playable solo, no multiplayer required. Shares Strategy and RPG with Colossal Citadels.
From the developers of Warhammer 40,000: Gladius, ZEPHON is a post-apocalyptic 4X strategy game built on Proxy’s unique tactical combat system. Guide survivors through a turbulent future, navigating unexpected disasters, eldritch horror and cyberpunk monstrosities. What will you do to survive?
- 7

Rising Lords
Single-player alternative to Colossal Citadels — playable solo, no multiplayer required. Shares Strategy and Indie with Colossal Citadels.
Rising Lords is a medieval turn-based strategy game with card and board game elements. Send your serfs to fight and die in your name... or let them prosper, and use them to your advantage!
- 8

Sid Meier’s Civilization® VI
Single-player alternative to Colossal Citadels — playable solo, no multiplayer required. Shares Strategy with Colossal Citadels.
Expand your empire, advance your culture and go head-to-head against history’s greatest leaders. Will your civilization stand the test of time?