Gameplay loops are the repeatable circuits of motivation, action, and reward from which player experience arises. The best designers understand how to weave and layer these loops with great dexterity, crafting nested structures that suffuse every moment of gameplay with multiple layers of goals and challenges. What are the principles behind this kind of impressive design feat? In Episode 28 of Vertical Slice we’re circling up on this fascinating question, and tracing the clever interactive orbits that spin beneath the surface of the most vibrant games.