The players are a group of adventurers. After today's quest, you have come to a popular diner called "Barrel’s". Sadly, you are broke and don't have enough money to order a single beer. But don't worry! The restaurant has a beer dispenser that pours beer for every coin.
Stack your coins one at a time in front of you until someone decides to challenge everyone on the amount of coins they are ready to flip. Up the stakes by outbidding the Challenger and become the lucky adventurer who will fill their mug. The moment frothy foam is revealed though, the challenge is stopped and the player with a filled up mug drink it up!
Beer or Air plays like a variant of SKULL with with differences including scoring rules and special character abilities. Get your adventurer drunk and filled with happiness!