斗地主 - ZingPlay Dou Dizhu

This is a portrait-oriented, casual card game played in short, solo sessions that can be interrupted at any time. While it offers high replay value and can be played with one hand, its monetization is aggressive, pushing players towards pay-to-win mechanics and limiting free play through energy timers. It's best suited for players who don't mind the aggressive monetization or are looking for a quick card game fix.