Single-player games like Hydroneer
Below are 17 single-player Steam games similar to Hydroneer, 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 Hydroneer page.
Ranked picks
- 1

Factorio
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Indie with Hydroneer.
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
- 2

MineMogul
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Indie with Hydroneer.
Design and build a factory deep underground in this physics-based automation sandbox. Mine resources, buy machines and master the chaos as you become the ultimate Mine Mogul!
- 3

Satisfactory
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Indie with Hydroneer.
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
- 4

Astro Colony
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Indie with Hydroneer.
Explore endless Universe and create the most efficient constellation of colonies. Build conveyor systems to automate production. Take care of Astronauts and their needs! Establish new colonies as part of intergalactic simulation.
- 5

Orebound
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Indie and Adventure with Hydroneer.
Orebound is a dwarven themed factory automation game. Play alone or with friends as you build, mine, craft and explore a voxel generated world! Build your fortress, expand your factory, fight off creatures who dwell beneath the mountains and embark on a journey of greatness.
- 6

Timberborn
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Indie with Hydroneer.
Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A sandbox city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood.
- 7

Forager
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Indie and Adventure with Hydroneer.
The highly popular and quirky "idle game that you want to actively keep playing". Explore, craft, gather & manage resources, find secrets and build your base out of nothing! Buy land to explore and expand!
- 8

Out of Ore
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Adventure with Hydroneer.
A casual heavy equipment experience. Mine ore, Move dirt, Build and repair.
- 9

Stationeers
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Indie and Simulation with Hydroneer.
Stationeers puts you in control of the construction and management of a space station to run by yourself or online with your friends. Complex atmospheric, electrical, manufacturing, agriculture, and gravitational systems require your thought and management at all times!
- 10

Space Engineers
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Indie with Hydroneer.
Space Engineers is a sandbox engineering game where you design and build ships, stations, and planetary bases in a fully destructible environment. Explore planets and space, mine resources, survive hazards, and engage in combat alone or with friends in Creative or Survival modes.
- 11

Oxygen Not Included
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Indie and Simulation with Hydroneer.
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
- 12

Techtonica
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Indie with Hydroneer.
Techtonica is a first-person factory automation game with a gripping mystery about mining your way out from the depths of an alien planet. Explore bioluminescent caves, mold destructible terrain, construct a massive subterranean factory. Dig your way toward answers & discover the secrets of Calyx.
- 13

Scrap Mechanic
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Indie and Adventure with Hydroneer.
Enter the creative paradise of Scrap Mechanic! Build fantastic machines, go on adventures with your friends and defend against waves of evil Farmbots in this imaginative multiplayer survival sandbox. With Scrap Mechanic’s powerful creation tools you can engineer your own adventures!
- 14

No Man's Sky
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Adventure with Hydroneer.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
- 15

Alchemy Factory
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Strategy and Indie with Hydroneer.
Start small, team up with friends, and automate production with conveyor belts, pipes, and magical devices. Stock your shop with potions, jewelry, and relics, complete commissions, and build an alchemy empire! Alchemy Factory 1.0 is out now with the Wagon Logistics System and revamped shopkeeping.
- 16

Terraria
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Indie and Adventure with Hydroneer.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 17

The Scuttle
Single-player alternative to Hydroneer — playable solo, no multiplayer required. Shares Indie and Adventure with Hydroneer.
Sail the Caribbean laying siege to naval forts in this short pirate adventure! Enhance your galleon, lead your crew into battle, and maybe drink a little rum along the way.