LEGO Masters is back for a fourth season, and you will want to check out the competition right away. The first season has already aired on FOX, and it's now available to stream on Hulu. From there, episodes air every Monday night.
Yes, the kids will likely be away when new episodes air. It begs the question of whether the series is suitable for them or not. After all, it involves building with LEGO. What's not for them to love?
I'd say a lot of kids are going to want to watch with you, as this is a chance to see just what can be made out of LEGO bricks. Just watch out for children recreating or mastering their own inventions, as your bank balance possibly isn't going to like all the LEGO you'll need to buy!

LEGO Masters age rating: This series earns its TV-PG rating
LEGO Masters is officially rated TV-PG, which means that it's suitable for the majority of audiences. Most children who are seven and older will be fine watching it. Younger than that, and it's more of a case of whether the show appeals to them. To be honest, they're probably still in the Duplo stage of life.
Sex & nudity: There is no sex or nudity on show throughout this competition program. FOX has strict rules about this, and it doesn't matter who the contestants are.
Language: If there is some accidental swearing, it will be bleeped out. This can happen now and again as people just forget about where they are and who the show is aimed at. That being said, those moments are usually going to be cut. The worst of the words you'll hear are "hell" and "damn," as this is made for the whole family to watch.
Violence & gore: Except for some fun moments of LEGO bricks going flying or pie being splattered around the place, there is no violence or gore at all. There are a few pranks now and then, and sometimes, LEGO buildings fall down. However, everything is in fun and games, with scenes that can definitely be recreated at home — just watch out for standing on those LEGO bricks!
Alcohol & drugs: You don't need to worry about either, as nothing is shown on the screen.

Overall verdict: Who is LEGO Masters appropriate for?
This is a great series to watch with the whole family. It's a competition show that involves LEGO building, and one of the great things is being able to see what the minds of other people can create. For those with Master Builders in the house, they're sure to want to see how they can challenge themselves next.
For children under seven, I'd say the series is a bit hit-and-miss. This isn't about the graphic content, because there isn't any, and it's more to do with the nature of competition shows. They just don't catch the attention of toddlers.
LEGO Masters airs on Mondays on FOX.