Capsules are obtained by recovering models from the Hypercube. They contain rewards that will help you make progress within Voxtale.
They provide Coins, and its quantity will depend on the type of Capsule and the Stage you are in. There are three types: Common, Rare and Exceptional.
To get the rewards they contain, you'll need to wait a certain amount of time that will depend on the Capsule. This happens because they are corrupted by the chaotic strength of the Hypercube and, to open them safely, they need to be decontaminated in the Interdimensional Thermodynamic Chaos Stabilizer (best known as "Microwave"). It's important to take into account that this process can be immediately completed using gems.