Chain Reaction Lab

Chain Reaction Lab is a compact offline engineering puzzle game about building one satisfying chain reaction. Place a limited set of devices on lab anchors, rotate directional parts, then press Start and watch the deterministic simulation unfold.

Solve 60 local experiments across six lab wings. Learn how Push Bombs, Steel Balls, Lasers, Mirrors, Pulse Crystals, Portals, Air Jets, Trigger Blocks, Pressure Switches, Splitter Prisms, and Timed Gates hand energy and momentum from one link to the next.

Every campaign puzzle rewards efficient setups with up to three stars. Retry an unchanged setup and the outcome stays reproducible, making experimentation clear and fair. A local replay summary highlights the causal chain after each run.

Sandbox mode removes scoring and targets so you can freely combine devices. The Device Glossary explains every lab tool, while the Stats screen tracks stars, solved experiments, successful runs, and best device counts locally.

Chain Reaction Lab works fully offline. It has no account, ads, analytics, tracking SDK, purchases, subscriptions, or required network access. Progress and settings stay on your device.