Meticulous Microbes

This is a "rules discovery" puzzle game like The Witness and many games inspired by it. Each type of microbe has a secret rule of how it wants to be placed in the grid, and you need to place them while satisfying all of their rules.

Controls: Left-click in the grid to place  (or remove) microbes. In puzzles with multiple types, click on the types on the right to swap which type you're placing. Once all the microbes are placed, click on the Check button to check the rules.

Right-click in the grid to place or remove markers: these don't affect the rules, but you can use them to track things for your solving purposes.

Keyboard shortcuts: Space/Enter to check your answers, number keys to swap microbe types, Q/E to switch levels.

Originally made in 72 hours for the Ludum Dare 56 Jam, where it got 70th place for Innovation. This is a slightly expanded version.