Single-player games like Besiege
Below are 15 single-player Steam games similar to Besiege, 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 Besiege page.
Ranked picks
- 1
Trailmakers
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
Build the ultimate vehicle and explore a vast open world filled with challenges and adventure. Play solo or team up with friends in multiplayer to conquer the toughest obstacles. With a thrilling campaign mode and endless creative possibilities, Trailmakers is the ultimate sandbox for adventurers.
- 2
From the Depths
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie with Besiege.
Over 1000 unique components allow you to build and command voxel vehicles from the deep ocean to outer space! Forge strategies, allegiances and fleets strong enough to destroy eight deadly factions of the planet and reign supreme. A genre-defying mashup of simulation, building, RTS and RPG.
- 3
BeamNG.drive
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Simulation with Besiege.
A dynamic soft-body physics vehicle simulator capable of doing just about anything.
- 4
SimplePlanes
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
Build airplanes by snapping parts together, designing wing sections, and attaching engines. At any time, you can strap yourself into the cockpit and see how it flies with realistic physics. If you're not in the mood for building, over 100,000 airplanes are available to download for free.
- 5
GearBlocks
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
Explore a world of creative building, interactive machines, and gears - lots of gears. Build all things mechanical: cars, trucks, cranes, tanks, gearboxes, engines, clocks, anything you can think of. Test your creations to destruction in challenging scenarios, and share them in the workshop!
- 6
Brick Rigs
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Simulation with Besiege.
Build your own vehicles or download one of the more than 200,000 creations already uploaded to the Workshop and experience the dynamic driving and destruction physics of Brick Rigs!
- 7
Forts
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie with Besiege.
Unleash your creativity and strategic prowess in Forts, the exhilarating physics-based RTS! Design, construct, and customize imposing fortresses, bristling with devastating firepower, and blast your opponent’s buildings to rubble!
- 8
People Playground
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space.
- 9
Factorio
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
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.
- 10
Prison Architect
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
Only the world’s most ruthless Warden can contain the world’s most ruthless inmates. Design and develop your personalized penitentiary in Prison Architect.
- 11
Space Engineers
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
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.
- 12
Door Kickers
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
Door Kickers is an innovative realtime strategy game that puts you in charge of a SWAT team and lets you command them during a tactical intervention.
- 13
RimWorld
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
- 14
Infinifactory
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
Infinifactory is a sandbox puzzle game by Zachtronics, the creators of SpaceChem and Infiniminer. Build factories that assemble products for your alien overlords, and try not to die in the process.
- 15
Poly Bridge
Single-player alternative to Besiege — playable solo, no multiplayer required. Shares Indie and Simulation with Besiege.
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!