Single-player games like 3d Engineers
Below are 9 single-player Steam games similar to 3d Engineers, 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 3d Engineers page.
Ranked picks
- 1
Poly Bridge
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
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!
- 2
Tinytopia
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
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!
- 3
Space Engineers
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
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.
- 4
Spaceflight Simulator
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
- 5
MineMogul
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
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!
- 6
Poly Bridge 2
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
The acclaimed bridge-building indie-hit is back! More levels, more features, more physics fun!
- 7
Medieval Engineers
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
Medieval Engineers is a sandbox game about engineering, construction and the maintenance of architectural works and mechanical equipment using medieval technology. Players build castles; construct mechanical devices and underground mining. There is an entire planet to explore!
- 8
Scrap Mechanic
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
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!
- 9
3d Bridges
Single-player alternative to 3d Engineers — playable solo, no multiplayer required. Shares Simulation with 3d Engineers.
Build your very unique bridges and other constructions in a physics based 3d environment