The large padded arm rotates around in the inflatable Meltdown as Tristan Winks, 10, of Rainier jumps over it, and Dex Dunlap, 10, of LaGrande, Ore., gets set to leap. Next they have to duck under the higher padded arm that counterbalances this one. And on and on. Saturday may not have been a great day outside, but the boys were working off a lot of energy and having fun in the Family Room, which recently opened at Three Rivers Mall in Kelso. The Meltdown is one of a variety of inflatable stations, along with climbing, swinging and other games set up to entertain a wide range of children. It was full of kids and their parents Saturday. The Family Room is open Tuesday through Saturday.