Customer reviews from Mattel Shop
Mega Bloks - Mattel Brick Shop Masters of the Universe Battle of Castle Grayskull Building Set, 867 Piece - COLLECTIBLES - Multicolor
Average customer rating
4.6
(25 Reviews)
Rating breakdown 25 reviews
5 Stars
15
4 Stars
9
3 Stars
1
2 Stars
0
1 Star
0
95%of customers recommend this product.
(
21 out of
22)
Customer Reviews for Mega Bloks - Mattel Brick Shop Masters of the Universe Battle of Castle Grayskull Building Set, 867 Piece - COLLECTIBLES - Multicolor
Customer Rating
5
Beautiful set
on August 24, 2026
Posted by: Jerrica512
from Winterville
[This review was collected as part of a promotion.] This was an amazing set! Me and my oldest did it together and I must say I enjoyed every minute! The directions were clear and easy to follow! It took us about 1 .5 days to complete it because we were really just enjoying the time together!
If you have a teen boy that acts like you don’t exist… get this and make it a “mommy and son” thing. They love the build an aspect of it… And I love the allowing me to help! I love that they supply the extra pieces because of course we lost some pieces earlier on… And everything is labeled and it goes by the number to bag when I tell you, this has been the easiest best Lego set. I have done. It has definitely been the best one I’ve done so far. We are fans of master of universe, and this was amazing to complete beautiful beautiful set
I would recommend this to a friend!
Written by a customer while visiting Mattel Shop
Customer Rating
5
Nice set!
on August 20, 2026
Posted by: HeMan fan
from Henderson Nevada
[This review was collected as part of a promotion.] Nice details with the packaging art and instructions. The nano figures are good likenesses for how small they are. Good color choices for the bricks they used. Good starting set for any fan of the movie.
I would recommend this to a friend!
Written by a customer while visiting Mattel Shop
Customer Rating
5
Great Build
on August 20, 2026
Posted by: micki6685
[This review was collected as part of a promotion.] I really enjoyed the difficulty of this build and that I didn’t get it completed quickly. I enjoyed the time it took and the amount of pieces that were available to make it so intricate. I also enjoyed all the figures that came in the set.
I would recommend this to a friend!
Written by a customer while visiting Mattel Shop
Customer Rating
5
Masters of the Universe
on August 19, 2026
Posted by: Britgirl1980
[This review was collected as part of a promotion.] Very lengthy build but funished oroduct is worth it. Great for kids who want a little bit of a challenge with their build. Y 9 year old was engaged throughout, even though there are almost 300 steps.
Written by a customer while visiting Mattel Shop
Customer Rating
4
Fun, engaging, cool build
on August 18, 2026
Posted by: fairydealmother
from Queens, NY
[This review was collected as part of a promotion.] My son had a great time building this set even though his interest in He-Man phase ended long ago. The Grayskull castle design was clever and fun to build. The moving parts in the final product are cool and the figurines are a great addition. Literally his only complaint was that certain pieces are difficult to snap together because they're at a weird angle.
I would recommend this to a friend!
Written by a customer while visiting Mattel Shop
Customer Rating
5
Great brick build for older kids
on August 18, 2026
Posted by: Yvonne
from NV
[This review was collected as part of a promotion.] I got this for my 11year old brick building fanatic. He needed something more challenging to build and this one definitely fits his needs. I love how you get individual bags with clear instructions on which bag to use next. That way the bricks don't get all mixedbup and lost. He did like the challange of buidling this castle amd it's way bigger than i thought. Overall very happy with this
I would recommend this to a friend!
Written by a customer while visiting Mattel Shop
Customer Rating
5
Clear instructions and a nice build.
on August 17, 2026
Posted by: flota
from Alabama
[This review was collected as part of a promotion.] What a fantastic masterpiece! The Masters of the Universe: Battle of Castle Grayskull building set from Mattel is an absolute delight! With its impressive 867 pieces, my son has spent hours building it, thoroughly enjoying the process. The set includes an impressive 16 Nanoworld figures, which adds a significant layer of excitement. My son even stated that these bricks are extremely similar to Legos.
The building set itself is of high quality, and the easy-to-follow instructions make it an enjoyable experience. The designs perfectly capture the essence of the animated figures, creating a visually appealing and immersive experience. However, the true magic lies in the imaginative play and storytelling that unfolds once the set is complete. My teenage son, who is 14, is thoroughly enjoying the experience, and I highly recommend this set to anyone looking for a fun and engaging building project.
The building set itself is of high quality, and the easy-to-follow instructions make it an enjoyable experience. The designs perfectly capture the essence of the animated figures, creating a visually appealing and immersive experience. However, the true magic lies in the imaginative play and storytelling that unfolds once the set is complete. My teenage son, who is 14, is thoroughly enjoying the experience, and I highly recommend this set to anyone looking for a fun and engaging building project.
I would recommend this to a friend!
Written by a customer while visiting Mattel Shop
Customer Rating
4
Challenging!
on August 15, 2026
Posted by: mommy2five
from Henryville, IN
[This review was collected as part of a promotion.] As a Masters of the Universe fan, my husband loved reminiscing about his childhood and all the nostalgia that this set brought him, and my 16 year old son who loves building block sets had so much fun building it. The instructions were easy to follow, having 166 pages of visual steps. It did take him several hours to put it all together (and was a little harder than he anticipated I believe). The color scheme made it a bit more challenging, and some of the pieces were a bit difficult to click together as well, even causing the built section to (in his words) "explode" from the force. They also were a bit painful, leaving block shaped indents in his skin from trying to snap them together at times. He liked all the detail and that parts of the castle move though. It also comes with several figures which really adds to the aesthetic. The finished Castle Grayskull looks great and is a great addition to his collection!
I would recommend this to a friend!
Written by a customer while visiting Mattel Shop