How do I get the rarer Pixballs?
Solution 1:
The wiki says:
All pixballs aside from the final 5 can be collected from any machine using tokens from the beginning of the game. Playing through the main story will award the normal version of 'Fat Dragon'. The remaining 4 pixballs - 'Sea Dragon', 'Bone Dragon', 'Asure Dragon', and 'Pixel King' (as well as their alternate versions and the alt of 'Fat Dragon') - are added to token machines after beating Earth Born for the first time. The 'Pixel King' is the most rare and may require a number of tries to win.