Diamond City: Idle Tycoon

This is a solo, portrait-oriented idle tycoon game with a mindless mood and high replay value, suitable for short, interruptible sessions. While generally playable offline and one-handed, the monetization is aggressive with frequent forced ads and expensive IAPs that can feel pay-to-win, making it best for players who don't mind these aspects or are looking for a game to passively progress with minimal cognitive load.