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Masters of The Universe: Assault On Castle Grayskull (Retail Pre-Order Edition)

Masters of The Universe: Assault On Castle Grayskull (Retail Pre-Order Edition) - Main image
$44.99 $59.99 In stock

Category: Retail Board Game Expansion

The Game StewardPreorder: Expected Delivery 2026-09-30
Board Game Geek Rating: 5.55
Board Game Geek Avg Player Rating: 8.34
Published: 2025
Content Notes: Retail Edition Masters of the Universe: Assault on Castle Grayskull Board Game Expansion by CMON. Includes Expansion. Requires Masters of the Universe Core Game (sold separately) to play.

Assault on Castle Grayskull’s new game mode puts players into one of two teams: the aggressors, who are attempting to take down the castle walls to gain control of Castle Grayskull, and the defenders, who must attempt to withstand the siege and protect its magical secrets.

This expansion brings powerful tools for both defenders and aggressors alike. As the game progresses, you will choose powerful Upgrades that aid you in your attack or defense of Grayskull: Should you play as the defender, you will have the castle’s full array of tools at your disposal. Build a mighty Laser Turret to rain down firepower on your foes! Raise your Banners high to grant boosts to your troops! As the aggressor, cunning strategies and tools are available to you as you plan your assault: Force Shields, Battle Ladders, and more are at your disposal.

Expansion comes with 2d castle overlay. Plastic Castle Greyskull must be purchased separately.

--from the publisher

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Customer Reviews (5.0 / 5 · 2 reviews)

Brian B. ★★★★★

The BGG community rating of 8.34 had me skeptical, but the asymmetric siege mechanics really shine once you get past the hefty rulebook. Setup takes a bit longer than I'd like, but the push-your-luck dice rolling for the heroes is pure nostalgia-fueled fun.

Owen R. ★★★★★

The pre-order wait until 2026 is tough, but seeing the 8.34 player rating made it a no-brainer—this expansion finally brings the epic castle siege gameplay I've wanted. The retail edition includes all the core mechanics without extra fluff, and setting up the board for a 4-player assault already fee