This is a Pico-8 game! To play it on your computer you'll need to purchase and download the Pico-8 fantasy console.
If you visit the Lexaloffle website you can purchase Pico-8 and try a bunch of other games for the system as well!
You can export Windows, Mac, and Linux builds with the EXPORT command! https://pico-8.fandom.com/wiki/Export#Exporting_a_desktop_app