
Last checked 4 Nov 2026

Last checked 4 Nov 2026
More about Planet Nine
Planet Nine is a physics-based puzzle game where players merge planets by colliding them like billiard balls to unravel the mystery of the universe. The game features adorable planet characters, a unique merge system that grows from tiny Mercury toward larger planets, and a physics-based mechanic where merging planets can send others flying. Players aim to reach the ninth planet through global and regional leaderboards, with scores tracked across daily, monthly, and all-time rankings. The game is designed for quick sessions (3-5 minutes per run) and supports 17 languages, including English and Japanese.