Single-player games like ADAPTR
Below are 15 single-player Steam games similar to ADAPTR, 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 ADAPTR page.
Ranked picks
- 1

Hardspace: Shipbreaker
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Simulation with ADAPTR.
Equipped with cutting-edge salvaging tech, carve & slice spaceships to recover valuable materials. Upgrade your gear to take on more lucrative contracts and pay your billion credits debt to LYNX Corp!
- 2

Space Engineers
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Indie with ADAPTR.
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.
- 3

Satisfactory
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Indie with ADAPTR.
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

Dig or Die
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Indie with ADAPTR.
Crash land on a hostile planet where you'll have to build the strongest defenses if you wish to live to escape from it. But be warned... this planet is merciless. Build strong, and smart; else physics may flood or destroy your only hopes of survival.
- 5

RAILGRADE
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Simulation with ADAPTR.
RAILGRADE is the train RTS game! Construct dense vertical railroads, build cities, construct vast factory chains with train automation! Restore an off world colony's economy all in the intense story driven campaign or relaxing sandbox mode!
- 6

Poly Bridge
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Indie and Simulation with ADAPTR.
Unleash your engineering creativity with an engaging and fresh bridge-building simulator with all the bells and whistles. Enjoy hours of physics-based puzzle solving in the Campaign and then jump in the Sandbox to create your own bridge designs and puzzles!
- 7

The Riftbreaker
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Indie with ADAPTR.
The Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.
- 8

Tinytopia
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Simulation with ADAPTR.
Construct charming toy towns and cities atop tiny terrain. Combine building blocks to create new megastructures. Test your skills in the physics-based Challenge stages or simply unwind and obliterate everything with an array of cute catastrophes!
- 9

FortressCraft Evolved!
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Indie with ADAPTR.
FortressCraft Evolved is a unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly lines. Players begin by crash-landing on a strange alien world, left with only a small handful of starting machines.
- 10

Ampu-Tea
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Indie and Simulation with ADAPTR.
The surgeon-simulator inspired Tea-making game is now available on Steam! Using the latest KS-001 Robo-Arm, you must practise making various types of tea.
- 11

Gnomancer
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Indie with ADAPTR.
DjArcas' Twin Stick Shooter for up to 4 players - Pikmin meets Gauntlet. Advance your character, get epic loot, raise a gnome army!
- 12

Steam Heroes
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Indie with ADAPTR.
Help three brave adventurers on their quest to stop the diabolical Baron Von Smog’s plot to conquer Steam Land. However, there is an army of evil minions that stand in your way. Challenge yourself in this new puzzle strategy game; includes 12 action-packed stages, a full soundtrack, competitive online play, all in stunning 720p HD...
- 13

Storm Area 51: September 20th 2019
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Simulation with ADAPTR.
Survive the epic raid on Area 51 and rescue the aliens from the military compound using classic stealth mechanics and cover.
- 14

PacketStorm
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Strategy and Indie with ADAPTR.
In PacketStorm, you play an AI developing a new Internet Service Provider. Each game takes place over a few second of game-time, but potentially many hours of realtime. Buy up routers, upgrade cable networks and deal with packet jams as you earn money to research new and better upgrades.
- 15

FortressCraft : Chapter 1
Single-player alternative to ADAPTR — playable solo, no multiplayer required. Shares Indie with ADAPTR.
FortressCraft : Chapter 1 Anniversary Edition is the PC-update to the world's first and best Creative-focussed Voxel block builder.