This Book Is A Dungeon takes the familiar idea of a dungeon crawler and transforms it into something closer to a sinister interactive novel. Instead of navigating detailed 3D corridors or fighting enemies through real-time combat, the player advances primarily by reading descriptions, making choices, examining disturbing situations, and accepting the consequences of curiosity. Developed by Nathan Meunier and published by Plug In Digital, it is a deliberately unconventional horror experience built around interactive fiction, light role-playing mechanics, puzzles, and repeated experimentation. Its minimalist presentation may initially appear simple, but beneath it is an adventure that takes considerable pleasure in making exploration dangerous.
The dungeon functions as a branching collection of encounters where seemingly ordinary decisions can produce dramatically different outcomes. Players investigate rooms, interact with questionable objects, encounter grotesque creatures, and decide whether potentially dangerous opportunities are worth pursuing. The game frequently rewards curiosity with useful information or progress, but it can just as easily respond with an unpleasant death. This uncertainty creates much of the tension. Every strange doorway, suspicious item, and mysterious event feels like a gamble, and avoiding danger entirely can mean missing some of the game's most memorable material.
Death is consequently treated less like conventional failure and more like another method of discovering the dungeon. There are numerous gruesome ways for an adventure to end, and seeing these outcomes becomes part of the entertainment. Learning from unsuccessful attempts gradually reveals how certain situations function and which decisions open different branches. Multiple endings further encourage experimentation because reaching one conclusion does not mean everything important has been discovered. Players interested in uncovering every possibility can revisit choices and deliberately pursue dangerous alternatives simply to see where they lead.
The horror writing is one of the game's defining characteristics. This is not a restrained ghost story but a deliberately grotesque mixture of occult imagery, supernatural creatures, bodily horror, violence, parasites, mutilation, and other unsettling concepts. The pixel-art illustrations provide visual reinforcement without attempting to depict every detail. That restraint works surprisingly well because the text leaves much of the imagery to the player's imagination. A disturbing description can therefore become more uncomfortable than the relatively modest graphics suggest.
There is a noticeable cosmic-horror flavor running throughout the adventure, particularly in its fascination with forbidden knowledge, bizarre entities, occult practices, and the danger of investigating things that should probably remain unknown. Yet the game also has a darkly playful streak. Some deaths and situations become so excessive that they generate a grim sense of amusement alongside the horror. This prevents the experience from becoming monotonously serious and gives its dungeon a peculiar personality.
Light RPG elements add some mechanical structure to the reading and decision-making. Inventory management, items, combat situations, and character-related systems occasionally influence how encounters unfold. These mechanics are intentionally secondary to the interactive-fiction foundation, however. Anyone expecting complex character classes, extensive equipment optimization, or sophisticated tactical combat should adjust expectations. The role-playing systems exist mainly to make choices and exploration more consequential rather than to compete with traditional dungeon-crawling RPGs.
Puzzles also help prevent the experience from becoming nothing more than a sequence of text selections. Certain situations require observation, interpretation of clues, or experimentation before the player can determine how to proceed. Some solutions can be intentionally obscure, which suits the mysterious atmosphere but may occasionally produce frustration. Because experimentation can lead to death, solving a problem often involves balancing caution against the temptation to investigate another suspicious possibility.
The greatest potential weakness is the same quality that makes the game distinctive. It is fundamentally a text-heavy adventure, and players must enjoy reading for the concept to work. Visual presentation and animation are extremely limited compared with conventional horror games, while combat is not sophisticated enough to carry the experience independently. Repeatedly revisiting material after unsuccessful choices may also become tedious for players who dislike trial-and-error progression. For the appropriate audience, however, those characteristics become strengths because imagination and decision-making remain more important than audiovisual spectacle.
Replay value comes from uncovering alternate paths, unusual deaths, hidden interactions, puzzles, and multiple conclusions. The substantial development diary included with the package is another interesting addition, providing a lengthy behind-the-scenes account of the project's creation and its origins in interactive fiction and independent publishing. It is not essential to enjoying the adventure, but it gives curious players an unusually detailed look at how such an experimental project came together.
Steam Deck compatibility is less straightforward. The game does not have an official Steam Deck compatibility rating, so it should be regarded as unverified rather than officially Verified or Playable. Its lightweight technical demands and simple interface make it the kind of game that may be practical to run through Steam Deck's compatibility environment, but users should be prepared for possible control or interface adjustments. The lack of an official Deck rating means compatibility should not be interpreted as guaranteed.
Ultimately, This Book Is A Dungeon is best approached as a hostile choose-your-own-adventure book enhanced with RPG mechanics rather than as a conventional action-oriented dungeon crawler. Its gruesome writing, branching decisions, frequent deaths, puzzles, multiple endings, and minimalist artwork create an experience with a strong identity. It is understandably niche, especially for players who prefer visual action over reading, but fans of interactive fiction and experimental horror should find plenty of wonderfully unpleasant surprises hidden inside its pages.
Rating: 7/10
