^^^ TL;DR the devs dont have a chromebook
if you wanna play, got to settings and enable linux (beta) and let it load. when its done, download the files and open up the app package and let it load. once its done an icon will (hopefully) appear on your launcher. if it doesnt, you will have to use the terminal.
hope this helps!
-IGotUFam, Owner of an actual Chromebook
edit: if an icon doesnt appear, there are tutorials on the internet which can teach you how to use the terminal. However as its a chromebook, its expected if some of the commands listed on tutorials dont work