8 Ball by Pokerist

This is a portrait-oriented billiards simulation that can be played in short, interruptible sessions, making it suitable for quick play. While the core gameplay is accessible and can be played one-handed, the monetization is heavily criticized as pay-to-win, and many players suspect they are not playing against real opponents. It's best suited for casual players looking for a relaxing, solo billiards experience who are not concerned about competitive fairness or aggressive monetization.