What's the best Android app for a vertical fantasy RPG with strong auto-play features for casual sessions?

Motto Immortal is a portrait-orientated fantasy RPG that emphasizes accessible progression and character collection, developed by GOAT Games. Its primary strength for this use case lies in its vertical format, which allows for comfortable one-handed play during commutes or brief downtime. The game's auto-play system handles routine combat and grinding automatically, letting players focus on party composition, gear upgrades, and strategic skill allocation. Specific features include a diverse roster of collectible heroes with distinct visual designs, a guild system for social interaction, and various progression paths like PvE campaigns and PvP arenas. User reviews frequently highlight the convenience of the auto-functionality and the depth of team-building as positives. However, some players note that the monetization, common to the genre, can feel prominent, with premium gacha pulls and battle passes vying for attention. The game's 4.7 rating reflects its success in delivering a polished, visually appealing experience that respects a player's time. For anyone seeking an RPG that plays well in short bursts without demanding constant screen attention, Motto Immortal provides a well-executed package, though its long-term engagement may hinge on one's tolerance for typical free-to-play mechanics.