
- BGG rank
- BGG #2,096
- BGG rating
- 7.7
Adventure Tactics: Domianne's Tower
- 1–5 players
- 45–90 min
- Complexity 2.5/5
- 2021

Expansion for Dungeons & Dragons: Onslaught
2026
Rules assistance for Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

What would you like to know?
Answers come from the official rulebook, with the page to check.
Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion is an expansion for Dungeons & Dragons: Onslaught released in 2026 for 1–2 players, 90 minutes per game, and ages 14 and up. It was designed by Alex Davy, Nicholas Yu, and Travis Severance and its main mechanics are Variable Player Powers, Area Movement, and Dice Rolling.
In a desperate attempt to survive the infamous Tomb of Horrors and its many perils, you must join forces! In this solo or co-op expansion for Dungeons & Dragons Onslaught, players guide their adventuring parties in a treacherous gambit to make it through the dungeon. The map layout and its dangers are randomly generated each time to make each delve unique. You'll be on the edge of your seat with a variety of lethal monsters and traps you'll need to outlast before conquering the evil demilich! Product Highlights: Experience the renowned Tomb of Horrors adventure module, notorious for its challenging plot with Onslaught gameplay! Every game generates the map and dangers randomly; each delve is a unique experience! Features brand new cooperative gameplay, map tiles, monsters, cards, and scenarios. It's time to team up! Players may use characters and treasure cards from any of the released D&D Onslaught expansions. Players can upgrade the included monster tokens to miniatures using suggestions from our D&D Miniatures lines! —description from the publisher
Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion supports 1–2 players according to the catalogue. This range comes from the publisher’s listed player count, so the game can be set up for any group size within it. Some setups, rules and scoring details may still vary by player count, so check your edition’s rulebook for the exact configuration.
The listed playing time for Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion is 90 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
The catalogue lists Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion for ages 14 and up. This is the publisher’s recommendation and reflects reading demands, rule complexity and small components rather than theme alone. Younger players can often join with help from an adult, so check the age guidance on your edition and consider your group’s experience with board games.
Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion belongs to these categories: Fantasy, Miniatures, and Expansion for Base-game. Its main mechanics are Variable Player Powers, Area Movement, and Dice Rolling. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The credited designers of Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion are: Alex Davy, Nicholas Yu, and Travis Severance. These credits come from the published game data and name the people responsible for the game’s design, not its illustrators or publishers. Designer pages on MeepleRules collect other titles by the same designers, which helps when you enjoy a game and want to find similar ones.
The catalogue lists Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion as an expansion for Dungeons & Dragons: Onslaught. Expansions add new content, rules or scenarios to the base game and usually cannot be played on their own, so you need Dungeons & Dragons: Onslaught to use it. Check that your edition of Dungeons & Dragons: Onslaught is compatible, as some expansions were revised between editions.