Peglin is an adventure game where you fight monsters and other enemies by scoring points in a Pachinko machine below the world. Like Peggle, you collect special orbs that deal damage to enemies by bouncing the ball into pegs. In this way you go on an unusual hunt to head into the woods, conquer fortresses, and delve into the heart of the dragon's lair to take back your gold.

Play involves first firing the ball into the field of pegs to maximise your points. You then use these to attack your enemies. Along the way you can acquire relics that offer special benefits and abilities.

It's a hard game where you are likely to die. If you're defeated your run is over, but you keep the orbs and relics to help you on your next attempt. It's an unusual combination of Peggle and Slay the Spire.