The staff was fantastic and friendly. We walked through the museum 5-6 times to find all the cards, runes, and wishing stone. We got a diploma and a fun memory together. It's made for kids but actually harder than I expected 😂. There was another section that recommended 30 mins, but we didn't get to do it. The runes were recommended 15 minutes, and that was okay, but the hidden stones were hard to find. We actually went to ask the receptionist who gave us several hints. We didn't have enough time at the museum and we spent 4-5 hours. There is English and Swedish available on everything. It's really interactive and fun, more for children, like weaving a sail for a ship, creating pictures, role playing, puzzle making, and running messages. It's all free. Other families came by, and they went through all the detective work step by step. Staff said it's mainly school trips and tourists of about 400 visitors a day. So, actually, I consider that still busy, especially when there are so many museums in Stockholm. Of course, we spent longer because we read almost every part of the viking area, and learning more about the history and Greek mythology in much more detail than what you would know from cartoons/ marvel films etc. I believe most people wouldn't know unless you were in education in the Scavandian countries or chose to study it. There was an interactive section where you can see the world and different realms like vahalla, etc. You can see the importance of the golden apples that keep the realms together.