One Deck Dungeon

Review by eFreeware

Some evenings there is time for a full dungeon crawl and some evenings there is not. Character sheets, inventories and long campaigns all demand attention that a short session cannot give them, which is the gap One Deck Dungeon is built to fill. It is a digital adaptation of the Asmadi Games card game from Handelabra Games, and it promises the essence of a roguelike using only one deck and some dice.

The pitch is a dungeon crawl you can finish in one sitting. You pick a hero, descend into one of several dungeons, and deal with whatever the encounter deck puts in front of you. Runs are meant to be short, and the developer notes that once you know your way around, a game takes roughly fifteen minutes.

It is a paid game at $9.99, with no ads, and it carries a Everyone 10+ rating. The store shows more than 100,000 installs and a 3.3 average from 1,233 ratings, a mixed figure that is worth keeping in mind as you weigh the price against what the game offers.

A dungeon crawl that fits in a deck

What sets this apart from a typical dungeon crawler is how it compresses the experience. The whole adventure is compressed into cards and dice. Each card is covered in colored boxes, and your turn is essentially a puzzle about filling as many of those boxes as possible.

That compression is the appeal. A run has a clear shape: you deal with encounters, roll dice, and try to cover the requirements in front of you. The developer describes the result as a roguelike boiled down to its essence, and the structure backs that up. You get the decisions and the risk of a crawl without the bookkeeping that usually comes with one.

The trade-off is that everything happens at the card level. If you enjoy the texture of exploring a world, this is a more abstract experience than the theme suggests. The dungeon is a sequence of encounters rather than a place, and the tension comes from the dice and the boxes rather than from wandering.

Six heroes and a talent tree

Before a run you choose one or two heroes from a roster of six: a Mage, a Warrior, a Rogue, an Archer, a Paladin and Mist, a breach mage who crosses over from the world of Aeon's End. Each has a different approach to problems, from spells to brute force, so the choice shapes how a run plays out.

Progress carries between games. Each run builds toward unlocking as many as 15 talents that strengthen your heroes later. That gives repeated runs a direction beyond simply seeing a different dungeon, and it softens the sting of a failed attempt.

The talent system is also where the roguelike structure shows most clearly. You are not just replaying the same scenario; you are gradually making your heroes stronger against challenges that stay difficult. It is a familiar loop, and it fits the short session length well.

Dice, boxes and the cost of failure

The core mechanic is straightforward to describe and harder to play well. Every card presents colored boxes, and you roll dice to fill them in. Whatever you cannot cover comes back at you as lost hearts and lost time, so a bad roll or a poor allocation has immediate consequences.

Complete an encounter, though, and you are rewarded. Each encounter rewards you with a skill, an item, or experience. Those rewards feed back into later encounters, which is what gives a run its arc: early choices about what to take determine how well you can handle what comes later.

Because the dice are central, chance plays a real role. The skill is in deciding how to assign what you roll rather than in controlling the roll itself. Players who dislike that kind of variance may find it frustrating, while those who enjoy making the best of a bad hand will find plenty to think about.

Five dungeons, five different problems

The base game includes five challenges, each with its own theme and threat. The Dragon's Cave holds a thick-skinned wyvern; the Yeti's Cavern brings freezing winds and an abominable snowman; the Hydra's Reef features a regenerating foe that replaces what you cut away. The Lich's Tomb is stocked with undead, curses and magical wards, and the Minotaur's Maze closes the set.

Each dungeon changes what you need to prepare for, which is part of why the hero choice matters. A run in one may reward a very different approach than a run in another. Between the five dungeons and six heroes, there is a reasonable amount of variety before you consider any expansions.

The variety is thematic as much as mechanical, but it is enough to keep repeated runs from feeling identical. If you play in short sessions, the rotation of dungeons and heroes is likely to carry you for a good while.

Playing alone or with a second player

The game supports one or two players, so it works as a solo puzzle or as something to share with someone sitting next to you. With two heroes in play, the decisions become a conversation about who covers which boxes and when to spend what you have.

That makes it unusually flexible for a board game adaptation. You can treat it as a solo challenge when you have a spare quarter of an hour, or bring in a second player when someone else is around. The same rules serve both, which is not always true of games in this genre.

The two-player mode is cooperative in the sense that both heroes are working through the same dungeon together. It is a shared problem rather than a competition, and the appeal is in talking through the dice rather than in outplaying each other.

Expansions and what they add

More content is available through in-app purchases. The Forest of Shadows expansion adds as much content again, with five new dungeons and five new heroes, plus a new encounter deck and a network of mossy tunnels and connected forest areas. The Abyssal Depths expansion introduces six Fiends that hound you throughout a quest on the way to the boss, along with two aquatic heroes.

The Relics of the Forge expansion adds more than twice as much content again. It adds twelve relics with their own abilities and mechanics, plus five new dungeons, six new heroes and a new encounter deck. Individual cards are also sold separately, including the faerie Caliana, the Fanatic, the Witch, and the Cinder Plains and Phoenix's Den dungeons.

The most recent update changed how relics can be used. You can now pick a relic while leaving the Relics of the Forge deck out entirely, and that setup and a hybrid relics deck both come with balance changes. That update also brought fixes and improvements, especially for Cloud Saves.

If you are new to the game, the base set is a complete experience on its own. The expansions are there for players who have worked through the five dungeons and want more of the same structure with new variables.

Who this suits

This is a good fit for someone who likes the idea of a roguelike but rarely has a long stretch to play one. The fifteen-minute run length, the persistent talent unlocks and the single-deck setup all point toward short, repeatable sessions. If you enjoy dice allocation and the puzzle of covering requirements efficiently, the core loop is likely to hold your attention.

It also suits players who want a board game they can play solo without a lot of setup, or share with one other person without teaching a rulebook. The two-hero mode gives you that option without changing what the game is.

The mixed reception is worth noting. A 3.3 average from over a thousand ratings suggests the game does not land for everyone, and the reliance on dice is the most likely reason. If randomness in a strategy game bothers you, that is the thing to weigh before spending $9.99.

The technical requirements are modest but specific: the game needs a NEON CPU and 1 GB of RAM. That is a low bar for most modern devices.

A short, sharp crawl for the right player

One Deck Dungeon does one thing well: it turns a dungeon crawl into a compact, repeatable puzzle. Six heroes, five dungeons, a talent system that carries progress between runs and a fifteen-minute session length add up to a game that respects your time. The expansions extend that considerably if you want them, and the relic changes in the latest update show the game is still being adjusted years after its 2018 release.

The price is $9.99 with no ads, and the expansions are optional purchases rather than requirements. That is a fair structure for a game with this much replay value, though the 3.3 average is a reminder that the dice-driven design will not appeal to everyone.

I would point this at players who want a solo or two-player roguelike they can finish in a sitting and who are comfortable with chance playing a large role. If that describes your evenings, the base game is a complete and reasonably priced starting point.

What's new in version 1.7.2

This update adds new possibilities for setting up the game with Relics. Now, you can choose a Relic without using the Relics of the Forge deck at all. This comes with some balance changes for playing with such a deck, as well as a balance change for playing with a hybrid Relics deck. It also has a few fixes and improvements, particularly related to Cloud Saves.