Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion
BGG rating
7.1

Expansion for Dungeons & Dragons: Onslaught

Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion

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.

  • 1–2 players
  • 90 min
  • 14+

Rules assistant for Dungeons & Dragons: Onslaught – Tomb of Horrors: Maps & Monsters Expansion

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.

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About the game

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

Questions and answers

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.