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Gurumin: A Monstrous Adventure

Gurumin: A Monstrous Adventure

Gurumin: A Monstrous Adventure is a cute and clever action RPG featuring real-time combat, 3D graphics, 90+ items, mini-games, multiple endings, a rocking soundtrack, 35+ hours of playtime, tons of fully voiced characters by an all-star cast of voice actors, and more!

Released Mar 30, 2015 Developer Nihon Falcom, Mastiff Publisher Mastiff Platforms Windows Action RPGActionAdventureRPG3D Platformer
View on Steam ↗ $9.99 (US · as of 2026-10-20)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26 · quoted reviews as of 2026-10-16.

90.9%positive1,116 reviews
Recommended · 173 found this helpful

“Originally a Japanese PC game released in 2004 later ported, and translated for the PSP in 2007. Gurumin: A Monstrous Adventure can be looked at as a "Kids" version of a Ys game (another great ARPG series from Nihon Falcom). This game is an Action RPG Platformer, with a unique…”

— a player, Steam review · 14 hrs played
Recommended · 69 found this helpful

“TL;DR: Don't be fooled by first impressions. Gurumin gets better a couple of hours in, and is very nostalgic of N64 and PS1 era games, so a great one for sitting on the couch and devoting a weekend or more to! NOTE: If you don't like the English voices there's a zip of the…”

— a player, Steam review · 21 hrs played
Recommended · 49 found this helpful

“okay - I got hooked. I didn't think I would, I really didn't. But damn, the whole thing is so cute and well made. The little things in this game, the little quips here and there show an underlying humor and a love for what they were making. If you have played any Nihon Falcom…”

— a player, Steam review · 7 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-05 via SteamCharts.

346all-time peak
0 25 50 2016 2018 2020 2022 2024 2026 No data collected for this period No data collected for this period No data collected for this period 46 avg · Apr 2015

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-10-20.

53achievements
10.8%median completion
0.9%rarest: Unbelievable Phantom Hunter
33.9% of players 31.9% of players 28.9% of players 28.5% of players 28.5% of players 24.3% of players 22.8% of players 22.3% of players 21.1% of players 20.7% of players 18.5% of players 17.9% of players 17.3% of players 16.4% of players 16.2% of players 16.0% of players 15.3% of players 14.5% of players 14.1% of players 13.0% of players 12.9% of players 12.3% of players 12.3% of players 11.5% of players 11.4% of players 11.4% of players 10.8% of players 10.6% of players 10.6% of players 10.3% of players 10.2% of players 9.6% of players 9.6% of players 8.9% of players 8.3% of players 8.2% of players 8.1% of players 8.0% of players 5.5% of players 4.9% of players 3.5% of players 2.8% of players 2.1% of players 2.0% of players 1.6% of players 1.6% of players 1.3% of players 1.2% of players 1.1% of players 1.1% of players 1.0% of players 0.9% of players 0.9% of players 33.9% 0% most earned rarest
Almost everyone has
33.9%Forward Slash — Get the Alpha Parts necessary for this attack
31.9%Drill Tornado — Get the Storm Parts, necessary damaging enemies around you
28.9%Cooking With Gas — Complete one level with S ranking
Rarest badges of honor
0.9%Unbelievable Phantom Hunter — Complete Crazy Mode with S or better ranking
0.9%Crazy Mode Completed — Complete Crazy Mode with all levels completed
1.0%Incredible Phantom Hunter — Complete Happy Mode with S or better ranking

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$9.99current · sampled 2026-10-20 11:41 UTC
$1.99lowest since tracking began2026-10-01
US9.99 USD
EU7.99 EUR
UK6.99 GBP
Australia13.99 AUD
Canada10.99 CAD
Japan980 JPY
Brazil19.99 BRL
China36.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

Brazil≈$4.0 China Japan Canada EU UK Australia US≈$10.0

Cheapest → most expensive, converted to USD at ECB reference rates (2026-10-20). Relative comparison only.

$0 $10 $20 07-11 07-31 08-19 09-09 09-28 10-20

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 25, 2021
The Steam Summer Sale is On! 🏖

STEAM SUMMER SALE 🌊🏖🌴Jump into some refreshingly cool savings during the Steam Summer Sale, like 70% off the adorable but challenging action-RPG, Gurumin: A Monstrous Adventure! This is the deepest di

Feb 10, 2019
Lunar New Year Sale & Your Chance to WIN a $25 Gift Card!

Happy Lunar Near Year, everyone! :lunar2019wavingpig: We hope that everyone has been having a wonderful year thus far, and that your holidays were filled with fun and cheer! We may be a little late to

Dec 21, 2017
Happy Holidays From Mastiff - Loads of Sales and Promotions!

http://cdn.edgecast.steamstatic.com/steamcommunity/public/images/clans/7923016/f8d7d82894f69fdb8c5a6099fc0aca1543169bd1.png - STEAM WINTER SALE - Grab a cup of hot coco and cozy up in front of the war

Dec 21, 2017
Happy Holidays From Mastiff - Loads of Sales and Promotions!

http://cdn.edgecast.steamstatic.com/steamcommunity/public/images/clans/7923016/f8d7d82894f69fdb8c5a6099fc0aca1543169bd1.png - STEAM WINTER SALE - Grab a cup of hot coco and cozy up in front of the war

Oct 26, 2017
Gurumin on Sale During Steam Halloween Sale!

http://cdn.akamai.steamstatic.com/steamcommunity/public/images/clans/7923016/b4ee6bbb8a468e440d6973bc688be0e1fcd7e706.png The Steam Halloween Sale is underway and Mastiff is dishing out treats for all

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-13.

GenresAction, Adventure, Indie, RPG
Player tagsAction RPG · Action · Adventure · RPG · 3D Platformer · Indie · Cute · Platformer · Exploration · Third Person · Anime · JRPG (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Full controller support · Steam Trading Cards · Steam Cloud · Family Sharing
LanguagesEnglish * *
ControllerFull support
Achievements53
Official sitehttps://mastiff-games.com/gurumin-3d/
Minimum system requirements (PC)

Minimum: OS *: Windows XP Processor: Pentium III 800 MHz Memory: 1 GB RAM Graphics: 64 MB VRAM, 3D accelerator compatible w/ DirectX 9.0c DirectX: Version 9.0c Storage: 2 GB available space Sound Card: Compatible with DirectX 9.0c