Linking is what allows you to create game logic in Mutate - also known as mechanics.
Linking works by connecting interactions between objects that have special components. Think of components as special abilities you assign to an object - like the ability for a spinning blade to move up and down for players to time running through and avoid getting sliced, or the ability for a button to trigger an explosion at a certain time. The possibilities are endless - you just have to be a little creative 👀
Linking is basically the game's thought process: when X happens, I respond with Y.
You can open Linking mode by pressing the bendy line icon in the top toolbar, or by pressing V. This will make 3 more subtools appear in the centre of the toolbar.