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The Monster Within

The Monster Within

A 50's horror comic themed deck building card game with roguelike progression elements. Stop yourself from turning into a monster, or embrace your inner evil and use your new gifts. Choose from a roster of classic monsters and duke it out in The Monster Within!

Released Oct 22, 2022 Developer GMO Free Games Platforms Windows · Mac StrategyCard GameDeckbuildingSingleplayerRogue-lite
View on Steam ↗ $14.99 (US · as of 2026-05-14)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-28.

79.2%positive96 reviews
Recommended · 0 found this helpful

“Love it. The classic, half-tone comics art, the 50s/60s background music, and of course the gameplay. No doubt I'll play until I unlock every monster.”

— a player, Steam review · 156 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. History through 2024-07 via SteamCharts; self-collected from the Steam API since Aug 2026.

20all-time peak
0 5 10 2022 2023 2024 No data collected for this period No data collected for this period No data collected for this period No data collected for this period 6 avg · Oct 2021

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-28.

22achievements
21.6%median completion
0.2%rarest: Monster Mangler
89.6% of players 70.3% of players 66.5% of players 48.8% of players 46.2% of players 39.2% of players 35.0% of players 34.5% of players 28.9% of players 25.1% of players 23.4% of players 21.6% of players 20.5% of players 19.7% of players 16.3% of players 14.5% of players 9.0% of players 7.2% of players 4.1% of players 2.1% of players 1.2% of players 0.2% of players 89.6% 0% most earned rarest
Almost everyone has
89.6%Card Get! — Unlock a card pack
70.3%Untainted — Beat blood level 0
66.5%Eternal Life — Win a run as Vampire
Rarest badges of honor
0.2%Monster Mangler — Beat all round 3 bosses
1.2%Monstrous Mastery — Win 50 runs
2.1%Abundance of Afflictions — Unlock all afflictions

Latest official news

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

Oct 28, 2024
Update to 2.1

Surprise update, happy Halloween! New content: Added blood level 10. Added super boss battles unlocked on blood level 10. Balance fixes: Reworked the Mad Scientist enemy ability. Bug fixes: Quite a fe

Oct 23, 2022
Update to 2.01

Changed the Shapeshifter enemy ability to reduce class cards by 2 instead of 1 Fixed the unlock condition for Amnesia not showing properly Fixed Doppelganger points not resetting between rounds and ca

Oct 22, 2022
Out of Early Access

It's the one year anniversery of The Monster Within releasing into early access! And we're celebrating that with the gaming coming out of early access! Yes, this is the full release! All ten monsters,

Oct 06, 2022
Update to 1.402

Content Additions: Add Shapeshifter skits Balance Changes: If you play as Shapeshifter, the Sociopath Affliction is unselectable (because it's way too OP with her)\ Devoted Lackey now costs 5 Put on t

Oct 03, 2022
Out of the Shadows

It's been a month since Shapeshifter came out and we've been hard at work to keep up the momentum and finish the game. We've been in early access for a year, but the light at the end of the tunnel is

Games like The Monster Within

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Griftlands Griftlands 93.2% · 5,621 reviews shares Deckbuilding, Comic Book, Card Game, Hand Drawn Monster Slayers Monster Slayers 78.6% · 901 reviews shares Class Based, Deckbuilding, Card Game, Rogue Lite Menace from the Deep Menace from the Deep 89.8% · 810 reviews shares Deckbuilding, Comic Book, Card Game, Rogue Lite Astrea: Six-Sided Oracles Astrea: Six-Sided Oracles 92.9% · 1,520 reviews shares Deckbuilding, Card Game, Hand Drawn, Rogue Lite Stacklands Stacklands 95.4% · 12,065 reviews shares Deckbuilding, Card Game, Hand Drawn, Rogue Lite None Shall Intrude None Shall Intrude 72.4% · 548 reviews shares Deckbuilding, Card Game, Hand Drawn, Rogue Lite Guild of Dungeoneering Ultimate Edition Guild of Dungeoneering Ultimate Edition 74.9% · 1,907 reviews shares Deckbuilding, Card Game, Rogue Lite, Comedy Death Roads: Tournament Death Roads: Tournament 81.7% · 551 reviews shares Deckbuilding, Card Game, Rogue Lite, Stylized

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-28.

GenresIndie, Strategy
Player tagsStrategy · Card Game · Deckbuilding · Singleplayer · Rogue-lite · Comic Book · 2D · Horror · Hand-drawn · Stylized · Indie · Class-Based (SteamSpy community voting)
FeaturesSingle-player · Family Sharing
LanguagesEnglish
Achievements22
Minimum system requirements (PC)

Minimum: OS *: Windows XP, Vista, 7, 8/8.1, 10 Processor: 2.0 Ghz Memory: 4 GB RAM Graphics: 1Gb Video Memory Storage: 2 GB available space