Gladiators Arena: Idle Tycoon

This is a casual, portrait-oriented idle RPG that can be played in short, interruptible sessions, making it suitable for quick play or while multitasking. While it offers a high degree of replayability and can be played one-handed, progression can feel slow without spending money, and the game requires an internet connection. It's best suited for players who enjoy passive progression and don't mind a potentially pay-to-progress model.