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Monster Monpiece

Monster Monpiece

Collect and train over 100 "monster girls" that come to life in strategic, card-based battles! Strengthen your cards with the First Crush ❤ Rub mode, taking on a hands-on role to warm them up and gain more artwork!

Released Mar 14, 2017 Developer COMPILE HEART, IDEA FACTORY Publisher Idea Factory International Platforms Windows StrategyCard BattlerDeckbuildingAnimeCard Game
View on Steam ↗ $9.99 (US · as of 2026-09-25)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-13.

72.8%positive389 reviews
Recommended · 0 found this helpful

“rose gave it to me shes so cool”

— a player, Steam review · 0 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-19.

38achievements
17.5%median completion
3.3%rarest: Monster Monpiece Master
77.4% of players 71.6% of players 70.4% of players 70.4% of players 69.8% of players 68.6% of players 53.6% of players 53.5% of players 45.0% of players 44.8% of players 41.0% of players 39.7% of players 39.3% of players 33.3% of players 33.3% of players 26.5% of players 23.8% of players 21.0% of players 20.7% of players 17.5% of players 16.6% of players 16.4% of players 15.6% of players 14.1% of players 13.3% of players 12.3% of players 12.1% of players 11.8% of players 10.3% of players 9.8% of players 9.4% of players 7.1% of players 6.8% of players 6.8% of players 5.1% of players 3.8% of players 3.8% of players 3.3% of players 77.4% 0% most earned rarest
Almost everyone has
77.4%The Adventure Begins... — Hidden achievement
71.6%Novice General — Hidden achievement
70.4%The Thrill Of Victory... — Hidden achievement
Rarest badges of honor
3.3%Monster Monpiece Master — Hidden achievement
3.8%Ladykiller — Hidden achievement
3.8%Compulsive Card Collector — Hidden achievement

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-08-12. Steam prices vary by region — always confirm your local price on Steam.

$9.99current · sampled 2026-09-25 21:36 UTC
$5.99lowest since tracking began2026-08-12
US9.99 USD
UK8.50 GBP
Australia14.50 AUD
Canada12.99 CAD
Brazil32.99 BRL
China42.00 CNY

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

China≈$6.3 Brazil Canada US Australia UK≈$11

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

$0 $10 $20 08-12 08-21 08-30 09-08 09-16 09-25

Latest official news

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

Sep 17, 2024
IFI Steam Sale 2024

Hello everyone! IFI has another special Steam sale! 😀 Save up to 75% off your favorite Neptunia and Idea Factory International published titles including Neptunia: Sisters VS Sisters and Death end re;

Dec 02, 2019
Apply to be a Beta Tester for Azur Lane: Crosswave!

https://steamcdn-a.akamaihd.net/steamcommunity/public/images/clans/32763017/ad548781adf3d07e6a42d7d8e8d99d24812d8b01.png To prepare for the upcoming Steam® release of Azur Lane: Crosswave , we’re look

Nov 27, 2019
Azur Lane: Crosswave Steam Page is Now LIVE!

https://steamcdn-a.akamaihd.net/steamcommunity/public/images/clans/32763017/7d707be6a1086935d1481d2ae72ec82dc54c8367.png Steam® and Azur Lane fans... land ho! We are excited to announce that the Steam

Oct 31, 2019
Azur Lane: Crosswave Sets Sail for Steam® in Early 2020!

https://steamcdn-a.akamaihd.net/steamcommunity/public/images/clans/32763017/7d707be6a1086935d1481d2ae72ec82dc54c8367.png Commanders! Full Steam ahead! We are excited to announce that the 3D action sho

Sep 18, 2019
Dragon Star Varnir™ Will Release A Day Early on October 8!

https://steamcdn-a.akamaihd.net/steamcommunity/public/images/clans/32763017/d82c28f280533a4d61f5765f5e172f575e4e5833.png Awaken the Dragon within! Previously it was stated that the Steam® release of D

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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.

GenresStrategy
Player tagsStrategy · Card Battler · Deckbuilding · Anime · Card Game · Hentai · Female Protagonist · Nudity · Story Rich · Sexual Content · Turn-Based Combat · Visual Novel (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · In-App Purchases · Partial Controller Support · Steam Cloud · Family Sharing
LanguagesEnglish
Achievements38
Official sitehttp://www.ideafintl.com/monmon/home.html
Minimum system requirements (PC)

Minimum: OS *: Windows 7 (64-bit) Processor: 3 GHz Intel i3 or equivalent Memory: 4 GB RAM Graphics: DirectX 10.x or OpenGL 3.3 or better graphics card with 1 GB RAM and support for v4 shaders DirectX: Version 11 Storage: 6 GB available space Sound Card: DirectX 9.0c compatible sound card Additional Notes: Caution: ATI Mobility Radeon HD 5xxx, 1GB VRAM 5000 series, AMD processor may not work properly with this game.