Planet Nine

Out there somewhere, but nobody has found it — a planet merge puzzle themed around "Planet Nine" 🚀 Launch planets like billiard balls and merge matching ones, growing from tiny Mercury toward the ninth planet 🌟 3-5 minutes per run, played with a mouse. Scores go to global leaderboards 🪐

Developer: haizai. Publisher: RED GAUGE STUDIO.

Tags: Casual, Puzzle, 2D Platformer, Puzzle Platformer.

Steam reviews: 5 user reviews (100% of 5).

Price: $6.99.

Released 2026-09-09.

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