The Game Census
Mushroom 11 cover art

Mushroom 11

Untame · 2015-10-15

SteamGOG

ActionAdventureIndie

Modes: Single player

Releases: Oct 15, 2015 (PC (Microsoft Windows)), Oct 15, 2015 (Mac), Oct 15, 2015 (Linux), Mar 09, 2017 (iOS), Mar 08, 2017 (Android)

An award-winning anti-platformer where destruction is the only way to move. Mold yourself into any form by destroying your cells, and traverse a devastated landscape filled with brain-twisting puzzles and bizarre mutations. Are you ready to break the mold?

0
playing now
84%
positive of 685 reviews
Very Positive
steam rating
100,000–200,000
owners (SteamSpy est.)
81/100
critic score (5 outlets, IGDB)
53/100
IGDB user rating (10 ratings)
pending
deck/linux tier (ProtonDB)
$14.99
steam price (US)

0 players in-game as of 2026-08-29 14:00 UTC (census sample)

Mushroom 11 is a 2015 puzzle-platform game developed and published by Untame. The game is a 2D side-scroller where players control a green mushroom by deleting parts of cells while it simultaneously regrows. The mushroom can be split and shaped to solve puzzles.

Health check

Insufficient data
  • · Not enough review history collected yet to judge health.
  • · Top 40% of 11,000 Action games in the census by review count.
Estimated sales: 17k–41k copies

Review-multiple estimate from 685 total reviews — how this is computed.

Current store prices

GOG$14.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $5.99 at Steam (2019-01-25) · bundled 3×via IsThereAnyDeal

12-month high $14.99 · on sale 1 of 3 observed days · $9.00 above the all-time low (census price snapshots)

Players online

202026-08-11 17:00 — 0 players2026-08-12 09:00 — 0 players2026-08-13 01:00 — 2 players2026-08-13 17:00 — 1 players2026-08-14 08:00 — 0 players2026-08-15 00:00 — 0 players2026-08-15 16:00 — 1 players2026-08-16 08:00 — 0 players2026-08-17 00:00 — 1 players2026-08-17 16:00 — 0 players2026-08-18 08:00 — 0 players2026-08-18 23:00 — 0 players2026-08-19 15:00 — 0 players2026-08-20 07:00 — 0 players2026-08-20 23:00 — 1 players2026-08-21 14:00 — 1 players2026-08-22 06:00 — 0 players2026-08-22 22:00 — 0 players2026-08-23 14:00 — 0 players2026-08-24 05:00 — 1 players2026-08-24 21:00 — 0 players2026-08-25 13:00 — 0 players2026-08-26 06:00 — 0 players2026-08-26 22:00 — 0 players2026-08-27 14:00 — 0 players2026-08-28 06:00 — 0 players2026-08-28 22:00 — 1 players2026-08-29 14:00 — 0 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$19.99$5.992015-01-012026-08-302015-01-01 — best price $19.992015-10-21 — best price $14.992015-12-04 — best price $14.992015-12-12 — best price $9.992016-02-22 — best price $7.492016-06-22 — best price $14.992016-08-29 — best price $7.492017-04-03 — best price $7.492017-05-25 — best price $14.992017-10-26 — best price $7.492017-11-22 — best price $7.492018-01-04 — best price $14.992018-05-10 — best price $7.492018-09-13 — best price $11.692019-02-04 — best price $9.892019-05-16 — best price $7.492019-06-25 — best price $7.492019-08-26 — best price $14.992019-11-21 — best price $7.492019-12-03 — best price $7.492020-01-22 — best price $7.492020-07-09 — best price $14.992021-02-11 — best price $10.042021-07-08 — best price $14.992021-11-24 — best price $9.892022-01-05 — best price $14.992022-06-23 — best price $9.892022-11-29 — best price $14.992023-03-16 — best price $9.892023-06-30 — best price $7.492023-11-21 — best price $7.492024-01-04 — best price $14.992024-12-19 — best price $8.992025-03-20 — best price $14.992026-06-25 — best price $9.892026-08-30 — best price $14.99
Lowest recorded price across tracked stores, per day (census snapshots).

Attention

602026-06-01 — 5 pageviews2026-06-04 — 2 pageviews2026-06-07 — 3 pageviews2026-06-10 — 3 pageviews2026-06-13 — 2 pageviews2026-06-16 — 0 pageviews2026-06-20 — 1 pageviews2026-06-23 — 3 pageviews2026-06-26 — 5 pageviews2026-06-29 — 3 pageviews2026-07-02 — 4 pageviews2026-07-05 — 4 pageviews2026-07-08 — 5 pageviews2026-07-11 — 1 pageviews2026-07-14 — 5 pageviews2026-07-17 — 2 pageviews2026-07-20 — 5 pageviews2026-07-23 — 5 pageviews2026-07-27 — 3 pageviews2026-07-30 — 1 pageviews2026-08-02 — 1 pageviews2026-08-05 — 0 pageviews2026-08-08 — 3 pageviews2026-08-11 — 4 pageviews2026-08-14 — 1 pageviews2026-08-18 — 3 pageviews2026-08-21 — 3 pageviews2026-08-24 — 2 pageviews2026-08-27 — 0 pageviews2026-08-29 — 2 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Details

WindowsmacOSLinuxSingle-playerSteam AchievementsSteam Trading CardsFamily Sharing1 DLC

1 supported languages: English

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)4,0381%35

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Player tags

2DIndieMusicActionPuzzlePhysicsAdventureDifficultPlatformerAtmospheric

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

VaganteDon't Knock TwiceSurvivalistToby: The Secret MinePLANET ALPHAForgotton AnnePikunikuSemblance

Similarity via IGDB.

Wikipedia ↗Official site ↗