The switch is a button that allows players to tap on the tiles and discover either X or filled tiles (green square).
To use the switch, simply click on the switch button and select either X or the green square, depending on what type of tiles you want to discover.
![](https://d2duuy9yo5pldo.cloudfront.net/twodesperados/d983ab91-d6c4-4f07-8346-1cda6659003c.gif)