In Eastward, you can play an arcade game called Earth Born. This is a tough-as-nails game that is similar to old-school JRPGs like Dragon Quest and Final Fantasy. Next to the arcade game, you can find what appears to be a gumball machine. Instead of gumballs, however, the machine contains Pixballs!
Pixballs function similar to amiibo but work for Earth Born. There are many different kinds to collect and use. You will need tokens to use the Pixball machine. Each machine will show you the Third Prize, Second Prize, and First Prize, which are common, rare, and super rare, respectively. You can see all the Pixballs in Eastward below. We will update the list with more information when it is available.
For more information on Eastward, check out How to get the No I in Team achievement in Eastward and What are Gear Parts in Eastward – Where to farm them? on Pro Game Guides.