Game

第九惑星

AppID 4292170 Developer haizai Publisher RED GAUGE STUDIO Release 9 September 2026 Last change 3 hours ago

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 🪐

App ID	4292170
App type	Game
Developer	haizai
Publisher	RED GAUGE STUDIO
Homepage	https://planet9.rdge.jp/
Release date	9 September 2026
Release state	released
Controller support	partial
Localized names	english Planet Nine japanese 第九惑星 schinese 第九行星 tchinese 第九行星 koreana 제9행성 spanish Planeta Nueve latam Planeta Nueve french Planète Neuf german Planet Neun italian Pianeta Nove portuguese Planeta Nove brazilian Planeta Nove russian Девятая Планета polish Dziewiąta Planeta indonesian Planet Kesembilan turkish Dokuzuncu Gezegen danish Den Niende Planet
Store page	store.steampowered.com/app/4292170
Last store refresh	4 hours ago

Launch options

#	Executable	Arguments	OS	Description
0	Planet Nine.exe		windows
1	Planet Nine.app		macos

Regional prices

All Steam store regions, converted to USD at today's exchange rate, compared with the US price. Lowest is the lowest price SteamRaw has recorded for that region.

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Price history, US store (USD)

Date	Price	Regular	Discount
12 September 2026 06:55 UTC	$6.29	$6.99	-10%

Branches

Branch	Build ID	Description	Updated	Password
public	25202325		9 September 2026 06:31 UTC

Depots

Depot	Name	OS	Size	Download	Public manifest	Notes
4292171		windows	363.44 MB	172.77 MB	4635665976593649187
4292172		macos	381.66 MB	181.07 MB	4017731032140467991

A build is one published version of the game's files on a branch. Steam assigns a new build ID every time the developer pushes an update, so this list is the update history of the app. The files inside a build (depot manifests) are only readable with an account that owns the game, which SteamRaw does not have yet, so build contents are not shown.

Build ID	Branch	Updated	First seen
25202325	public	9 September 2026 06:31 UTC	5 hours ago

Every appinfo change SteamRaw has observed, grouped by changelist. Tags, features, languages, builds, depots, prices and any other key Steam publishes. Tracking since at least 12 September 2026 05:36 UTC (estimated from the earliest recorded change; the exact first fetch was not stored).

Changelist 38814719 3 hours ago · 1 change

Change	Old	New
Added depots.privatebranches		1

Changelist

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What changed

38814719

3 hours ago

1 change

Full appinfo as delivered by Steam PICS, changenumber 38814719. Also at /api/app/4292170/raw.

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