Planet Nine overview

Overview

Planet Nine comes from haizai and is published by haizai. It arrived on Steam on Sep 9, 2026, and it sits naturally among Single-player, Steam Achievements, Partial Controller Support, Steam Leaderboards, and Family Sharing. SteamPulse tracks it across Windows and macOS so readers get a quick useful snapshot, not just a wall of numbers.

Players and reviews

Planet Nine's latest SteamPulse observation recorded 1 players at 22 September 2026 - 15:26:10 UTC, with a tracked peak near 4. This peak is the highest value in the available SteamPulse record and may not include activity before tracking began. Player reaction is 0% positive across 0 reviews.

Language and system requirements

Planet Nine is available in 17 languages including:

3 regional rating boards including dejus, steam germany, and igrs

Sales, recommendations, and streams

Planet Nine has no public VGI unit-sales estimate available and has recommendation data pending. Revenue data is not available for this game yet. On Twitch, 0 streamers are live with around 0 total watchers.

Planet Nine overview details

Planet Nine combines live player counts with reviews, pricing, platform support, Store metadata, dated player history, media, recent news, and related games.

Steam Store description

🪐 Merge planets and unravel the mystery of the universe! It's out there somewhere, yet no one has ever found it——the "ninth planet". Collide cute planets together, merge them, and uncover the secret yourself. 🌟 Aim, shoot, merge Launch a planet like a billiard ball and send it crashing into another of the same kind — they'll merge into one! Grow from tiny Mercury toward the larger planets, one merge at a time. 3-5 minutes per run, played with just a mouse. Perfect for a quick break, and easy to come back to again and again. 🚀 Features A cast of original, adorable planet characters A unique physics-based merge system — think billiards, but in space Merging planets can send others flying your way — deflect them before they cross the line! A cozy, relaxing space world to get lost in Playable in 17 languages , including English and Japanese 🏆 Regional and global leaderboards Your high scores go to both your country's leaderboard and the global one, ranked across daily, monthly, and all-time boards. How far can you climb? And what will you find when you finally reach the ninth planet...? 🎁 Collect as you play Spend the coins you earn to unlock music, themes and illustrations. The more you collect, the more your own version of the universe changes. 🎵 Music from seventeen creators The music features six guest composers (neruko / Sentaku / asMi / ꄲꅐ꒒ / Kadan / NemCa) alongside eleven more musicians selected through an open call. ◤◢◤◢◤◢◤◢◤◢◤🎙️STREAMING POLICY🎙️◢◤◢◤◢◤◢◤◢◤◢ Streaming, Let's Plays, and video uploads are welcome. No permission needed, no reporting r…

SteamPulse editorial summary

Planet Nine is listed as a game with $6.99. It supports Windows and macOS, belongs to Single-player, Steam Achievements, Partial Controller Support, Steam Leaderboards, and Family Sharing, and is associated with Casual. SteamPulse's latest observation records 1 players at 22 September 2026 - 15:26:10 UTC, a tracked peak of 4, and review score data when available.

Highlighted achievements

Support and legal notes

Real questions answered from SteamPulse data, including live players, monthly momentum, review sentiment, regional audience signals, Twitch activity, and current Steam pricing.