ReactionLab Classic

The original ReactionLab! Draw elements onto the canvas and watch them interact!

🌟 ReactionLab 2 is now available!

ReactionLab is a pixelated particle sandbox game. Draw elements onto the canvas and watch them interact in real time!

This is the original version of the game. It contains:
- 40+ Elements
- 70+ Total particle types
- 45+ Achievements and reactions

ReactionLab uses no permissions, takes up only 1MB, and runs smoothly on any device.