Single-player games like Celestis
Below are 12 single-player Steam games similar to Celestis, 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 Celestis page.
Ranked picks
- 1
Dome Keeper
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Indie with Celestis.
Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!
- 2
FleetLord
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Strategy and Indie with Celestis.
A space RTS about decisions, not menus. Conquer planets, link them to fuel your war machine, and level up your empire with randomized perk cards. Crush all opposition.
- 3
Sins of a Solar Empire II
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Strategy with Celestis.
Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
- 4
Abstractanks
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Strategy with Celestis.
Abstractanks is a minimalist RTS game where you control many units of the same type. Focus on map control to access resources because there is no base-building. Play intense skirmishes with up to sixteen teams, where positioning, quick decision-making and a little bit of luck are rewarded.
- 5
Planetary Annihilation: TITANS
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Strategy and Indie with Celestis.
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
- 6
Worbital
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Strategy and Indie with Celestis.
With the shifting gravity on your side, aim your cannons, blast your enemies and enjoy the fireworks. Worbital is a real-time strategic artillery game in space, peppered with a heavy dose of cosmic chaos. The goal: be the last civilization standing!
- 7
Sins of a Solar Empire: Trinity®
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Strategy and Indie with Celestis.
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
- 8
HYPERCHARGE: Unboxed
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Strategy and Indie with Celestis.
Hypercharge is a first and third-person shooter action figure game you've always dreamed of! Grab your friends, complete objectives, defend the Hypercore against waves of weaponized toys, and defeat Major Evil together in the story campaign!
- 9
Risk
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Strategy and Casual with Celestis.
Draft! Attack! Fortify! Play the original game of strategy and world domination — now for your PC. Enjoy the classic look and fun of RISK in an exciting new interactive experience. Play two ways as you strategize over the map and set out to conquer the world.
- 10
Windward
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Indie with Celestis.
Windward is an action-filled multiplayer sandbox game that puts you in control of a ship sailing the high seas of a large procedurally-generated world.
- 11
Project 5: Sightseer
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Indie with Celestis.
Open world multiplayer sandbox/RPG game. Explore, gather, build, research, and fight to protect what's yours -- by yourself or together with your friends.
- 12
Windward Horizon
Single-player alternative to Celestis — playable solo, no multiplayer required. Shares Indie with Celestis.
Trade, quest, fight, or simply set sail and enjoy the ambiance in this charming open world naval RPG. Sequel to Tasharen's fan favorite game Windward released on Steam in 2015.