I ordered the kids some Metro Mags for Valentine's Day. They arrived just in time for them to play with during several snow storms. With the exception of LEGO's my children don't play with any toy for long especially Harley. But each one of them love these and play with them every day. Essentially, they are magnetic tiles in different shapes and sizes. I had to pass on how happy I am with this toy since it is such a rare occurrence. There are several brands including Magformers and Magna Tiles and I believe most are comparable to the Metro Mags. They are expensive but are worth it.