Similar games

Games like Project Chemistry

2020PCSteam Deck playable84 % positive12.79 €

You build atoms into molecules in a sandbox and watch how substances react with each other. In quest mode you synthesize specific molecules and discover the elegance of chemistry along the way.

Sandbox with your own goals
Puzzles and brain teasers
Cosy, great for unwinding

＋ Combine with my games

In short: games like Project Chemistry

Best alternative overall: Shapez 92% match – Sandbox with your own goals
Newest alternative: Cozy Marbles 90% match – released 2026

Best match

Shapez

92 %Match

2020PCSteam Deck playable96 % positive9.99 €

You build factories on an infinite map that automatically cut, rotate, paint and stack geometric shapes. It rewards clever layout design and optimization, with no combat or time pressure.

Similar games →

A physics-based bridge-building puzzler where you design structures on a budget so vehicles can cross safely. The sandbox and Steam Workshop support offer nearly endless levels and room to experiment.

Retro Gadgets

Sandbox with your own goals

A creative retro-styled sandbox where you design, wire and program your own gadgets using Lua, then share them with the community. Ideal for tinkerers who like to experiment at their own pace.

Replicube

Gameplay comes before story

A programming puzzle game where you write code to recreate 3D voxel objects. Beyond the puzzles, you can chase leaderboard rankings or freely create art to share with the community.

PC Building Simulator

Realistic visuals

You assemble and repair gaming PCs using faithful replicas of real components, with no cost or risk. Running a small repair workshop, you take customer jobs and learn how hardware fits together at a relaxed pace.

Cozy Marbles

Sandbox with your own goals

You build your own marble runs from a wide range of pieces and watch the marbles roll. A lo-fi ASMR soundscape and nostalgic feel make for a calm, stress-free sandbox.

Wrench

Realistic visuals

A highly detailed mechanic simulator where you service and rebuild race cars bolt by bolt in your own prep shop. It can be played on a regular screen or in VR.

Poly Bridge 3

Bright, upbeat tone

A physics-based puzzle game where you engineer bridges to carry vehicles safely across gaps. The campaign, sandbox mode and mod support encourage plenty of tinkering and creative, often hilarious solutions.

Car Mechanic Simulator 2018

Realistic visuals

A detailed garage simulator where you diagnose, strip down and repair cars bolt by bolt. Barn finds, junkyards and a car editor let you grow your repair business at a relaxed pace.

Crazy Machines 3

Gameplay comes before story

A physics-based puzzle game where you build Rube Goldberg-style contraptions using electricity, lasers, explosions and wind. Chips let you give objects custom properties, encouraging free experimentation.