Single-player games like Kepler Protocol
Below are 8 single-player Steam games similar to Kepler Protocol, 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 Kepler Protocol page.
Ranked picks
- 1
Imperialist
Single-player alternative to Kepler Protocol — playable solo, no multiplayer required. Shares Strategy and Simulation with Kepler Protocol.
Can you exploit the New World to control the Old? Lead your nation over five centuries of history in this 4X Strategy game. Build production chains, manage logistics, grow your Empire, and outmanoeuvre rivals diplomatically or on the battlefield, to become history's first Superpower.
- 2
Airship Dragoon
Single-player alternative to Kepler Protocol — playable solo, no multiplayer required. Shares Strategy with Kepler Protocol.
Uber-Hardcore, Turn-Based, Steampunk, Squad Tactics. Battle 6 other factions for control of Pangea in emergent, tactical gameplay.
- 3
Xenonauts 2
Single-player alternative to Kepler Protocol — playable solo, no multiplayer required. Shares Strategy and Simulation with Kepler Protocol.
Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe.
- 4
Terra Invicta
Single-player alternative to Kepler Protocol — playable solo, no multiplayer required. Shares Strategy and Simulation with Kepler Protocol.
An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.
- 5
SandTable War: Three Kingdoms
Single-player alternative to Kepler Protocol — playable solo, no multiplayer required. Shares Strategy and Simulation with Kepler Protocol.
"SandTable War: Three Kingdoms" is a strategic simulation game set during the Three Kingdoms period. Here you can play as various factions from Three Kingdoms history to conquer cities and lands, unify the realm. With abundant historical officers and scenarios, come restore the Han Dynasty!
- 6
Sid Meier's Civilization VII
Single-player alternative to Kepler Protocol — playable solo, no multiplayer required. Shares Strategy and Simulation with Kepler Protocol.
The award-winning strategy game franchise returns with a revolutionary new chapter. Sid Meier's Civilization® VII empowers you to build the greatest empire the world has ever known!
- 7
ROMANCE OF THE THREE KINGDOMS 8 REMAKE
Single-player alternative to Kepler Protocol — playable solo, no multiplayer required. Shares Strategy and Simulation with Kepler Protocol.
Theater of war, infinite drama. A masterpiece of historical simulation "ROMANCE OF THE THREE KINGDOMS 8" is revived after 20 years. Enjoy the greatest military drama in the Three Kingdoms series, with the largest number of officers and scenarios!
- 8
Europa Universalis IV
Single-player alternative to Kepler Protocol — playable solo, no multiplayer required. Shares Strategy and Simulation with Kepler Protocol.
Rule your land and dominate the world with unparalleled freedom, depth and historical accuracy. Write a new history of the world and build an empire for the ages.