Single-player games like Close the Sky
Below are 8 single-player Steam games similar to Close the Sky, 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 Close the Sky page.
Ranked picks
- 1

The Last General
Single-player alternative to Close the Sky — playable solo, no multiplayer required. Shares Strategy and Simulation with Close the Sky.
Lead thousands of units in this large scale modern war RTS as you manage economy and logistics, build your war machine, and fight across millions of procedurally generated scenarios, or jump into the battlefield controlling any unit in first or third person at any time.
- 2

Mandate Order
Single-player alternative to Close the Sky — playable solo, no multiplayer required. Shares Strategy and Simulation with Close the Sky.
Mandate Order is a Warring States war city-builder set in ancient China. Build a stronghold, manage industries and logistics, recruit scholars from the Hundred Schools of Thought, raise armies, and command real-time tactical battles with thousands of soldiers.
- 3

First Strike
Single-player alternative to Close the Sky — playable solo, no multiplayer required. Shares Strategy and Simulation with Close the Sky.
FIRST STRIKE is a fast paced real time strategy game where you play one of the twelve biggest nuclear superpowers of the world – from known superpowers like the USA to an upstart hellraiser like North Korea – and try to be the last one remaining when the whole world blows to smithereens.
- 4

Wargame: Red Dragon
Single-player alternative to Close the Sky — playable solo, no multiplayer required. Shares Strategy and Simulation with Close the Sky.
The new reference in RTS at its best! The Wargame series returns to duty, larger, richer and more spectacular than ever before. In Wargame Red Dragon, you are engaged in a large-scale conflict where Western forces clash against the Communist bloc.
- 5

Steel Division: Normandy 44
Single-player alternative to Close the Sky — playable solo, no multiplayer required. Shares Strategy and Simulation with Close the Sky.
Steel Division: Normandy is a tactical real-time strategy (RTS) game that pits players against AI enemies in a single-player campaign -- or against several opponents in massive 10-on-10 multiplayer battles.
- 6

SkyInFlames
Single-player alternative to Close the Sky — playable solo, no multiplayer required. Shares Strategy and Early Access with Close the Sky.
Command drones, deploy mobile air defense systems and conduct tactical aerial operations. Choose your side - Ukrainian or Russian forces - and protect critical infrastructure in a realistic military simulation on a detailed map.
- 7

Attack on Toys
Single-player alternative to Close the Sky — playable solo, no multiplayer required. Shares Strategy with Close the Sky.
Relive Your Childhood Toys comes to life! Build your Army Toys, make battle scenario, watch the Toys battling each other, and customize your play with Attack on Toys Toy Box. Command your Army Toys to fight againts another toys strategically and keep them alive during battle!
- 8

Broken Arrow
Single-player alternative to Close the Sky — playable solo, no multiplayer required. Shares Strategy with Close the Sky.
Broken Arrow is a large-scale real-time modern warfare tactics game that combines the complexity of joint-forces wargaming with action-packed real-time tactics gameplay.