1. Go into your steam library and select Garfield Kart. There should be a gear on the right, that when clicked, will activate a dropdown.
















2. Select the properties option in the dropdown. A new page will open up. Select the "betas" section on the lefthand side of the page and change the selected option from "None" to "multi_test - Test multiplayer P2P"














3. Save your changes and update Garfield Kart. Reopen Garfield Kart from your steam library. Relaunching will prompt this popup:









Select the second option, and press play.


4. Congrats. You can now play the multiplayer beta of Garfield Kart.

In order to play with friends, they also need to have the multiplayer beta installed.