To add a new category to a page you can click the Category button at the bottom of the page and type in the name you'd like your category to be called.
A full list of existing categories can be found at Special:Categories.
Pages in category "Browse"
“ This page will consist all previous and current versions, with notes provided by the developers...
“ Hello and welcome to the Slime Rancher Wiki. You love the game and want to contribute to this...
“ This category contains disambiguation pages — navigational aids which list other pages that...