One of my favorite games is Portal 2. This game contains many loops, as you learn the different mechanics of portals, gels, light bridges, buttons, etc. These skills are reinforced in the puzzles throughout the game and are also combined into compound skills as the puzzles become more complex. Additionally, there is an overarching narrative arc. The first half of the game focuses more on the interaction loops in dedicated puzzle levels to introduce and teach mechanics to the player. The second half is more narrative-arc driven while also relying on the skills taught in the first half to navigate the story
