This Splash screen prototype shows a vector animation of a headphone made in After Effects. Use the Bodymovin plugin that exports a JSON file and can be dropped right into Proto.io.

A simulation of a shopping cart project. Add remove products to a pre-set shopping cart (Use of variables and States)

Using variables and conditional interactions to create a way to track how long you have hovered over a component and execute a sound once 5 seconds of hovering has been completed.