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

Crispy Circuits
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie and Simulation with World of Contraptions.
Discover the world of electronics by fixing your hamster’s RC plane. Build real circuits, solve increasingly challenging engineering puzzles, and learn how electronic devices actually work. This wholesome circuitry sim lets you electrocute your hamster without authorities getting involved.
- 2

Geareo
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Simulation with World of Contraptions.
Real gears that don’t slip in a physics sandbox. Build freely with resizable parts and shapes, solve physics-based puzzles, fuse structures with Super Glue into stable mechanisms, and engineer intricate contraptions, precision machines, and complex mechanical systems.
- 3

JOY OF PROGRAMMING - Software Engineering Simulator
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Strategy and Indie with World of Contraptions.
Use real Python code to automate machines, robots, drones and more: Program self-driving vehicles; crack passwords; apply machine learning; automate logistics; use image processing to guide missiles. Gain real coding skills and solve exciting bite-sized programming challenges.
- 4

GizmoLab VR
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Strategy and Indie with World of Contraptions.
A VR sci-fi sandbox game where you can put your skills to the test to build crazy inventions, with mechanics analogous to real-life electrical engineering.
- 5

Clank-Robotics
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Simulation with World of Contraptions.
Build your own robot. Program your robots AI in the Visual Scripting logic editor. Compete against other people's robots in the ranked arena. Build the strongest and smartest robot and win.
- 6

Mnemonimov
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Simulation with World of Contraptions.
Mnemonimov is a fantasy console where you program in ASSEMBLY like in the 80s. Build anything from games to operating systems and understand how computers work at a low level.
- 7

ChipWits
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie and Simulation with World of Contraptions.
Program a robot to solve logic puzzles in ChipWits, an open-ended programming game for beginners and experts alike! Inspired by the 1980s original, ChipWits combines the best of puzzle games, automation, and programming to introduce a new generation of players to a classic gaming experience.
- 8

Comet 64
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie and Simulation with World of Contraptions.
Comet 64 is a programming puzzle game. The year is 1984. All you got is a Comet 64 home computer and the operator's manual it came with.
- 9

Poly Bridge
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie and Simulation with World of Contraptions.
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!
- 10

Scrap Mechanic
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie and Simulation with World of Contraptions.
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!
- 11

Trailmakers
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie and Simulation with World of Contraptions.
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.
- 12

Main Assembly
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Simulation with World of Contraptions.
You’re the designer, engineer and architect if you can imagine it you can create it! Construct robots of any shape or size from eight-legged spider bots to eerie UFO contraptions.
- 13

Kerbal Space Program
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie and Simulation with World of Contraptions.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
- 14

Besiege
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie and Simulation with World of Contraptions.
Besiege is a physics building game about constructing medieval machines to annihilate armies, obliterate castles and overcome challenging obstacles. Conquer the campaign or skirmish with friends in Multiplayer!
- 15

Flipper Soccer
Single-player alternative to World of Contraptions — playable solo, no multiplayer required. Shares Indie with World of Contraptions.
Play a quick game of Flipper Soccer - the game that mixes football with pinball. Control the flippers to score goals against your opponent, who can be your friend or the computer.