Shells are the camp's basic currency. You collect them by clicking shells you find around the map, especially along the beach and tucked near props, then spend them in the shop on cosmetic accessories such as hats that customize how your cursor looks. There is no pressure to spend immediately; you can save shells and preview accessories before committing.
The campfire is the most mechanic-dense spot and a good place to learn the game. You can grab a stick of marshmallows and roast them over the flame, and the roasting speed is determined by how close the tip of your cursor is to the fire; after roasting, the marshmallow is eaten automatically after a short delay. Nearby there is a pot you can heat by adding sticks to the fire, then drop mushrooms into it to brew a stew or potion, where a redder mixture indicates a stronger effect. These small systems reward careful cursor positioning rather than fast clicking.
Beyond the fire, the camp is full of optional activities: a slide to ride, water to splash in, a soccer field other cursors gather around, a boat with props to test, and a telescope to look through. Progress such as collected shells is saved in your browser session, so staying in the same browser keeps your camp consistent. There are also hidden badges that unlock when you meet specific, often unexplained criteria, which is where the deeper guides on this site come in once you have the basics down.