What's the best Android app for a fantasy RPG that's easy to play in portrait mode during short breaks?

MU is a mobile fantasy RPG developed by FingerFun Limited, explicitly designed for on-the-go play. Its primary suitability for short, casual sessions stems from its portrait mode orientation, which allows for comfortable one-handed play during commutes or brief downtime. The game's extensive auto-play system handles combat, quest navigation, and resource gathering automatically, enabling meaningful progression even during 5-10 minute breaks. Specific features like the auto-equip system, which instantly applies the best gear, and the auto-skill activation in combat remove typical menu-management friction. The game structures its progression into clear, bite-sized daily tasks and instanced dungeons that can be completed quickly. However, reviews indicate that the auto-play can sometimes feel too hands-off during prolonged play sessions, reducing the sense of direct engagement. The portrait UI, while convenient, occasionally crowds the screen with event icons and menus. For players seeking a visually detailed fantasy RPG that respects limited time through efficient systems rather than demanding constant attention, MU presents a well-considered option. Its 4.8 rating reflects broad satisfaction with this specific casual, vertical format.