Ages 6 and up, 1 or more players. RollerCoaster Challenge from Thinkfun is a great game that brings STEM concepts to a game. If your kiddo likes to build things, figure things out, and loves STEM projects they are going to love this game. My daughter is 8 and this is by far one of her favorite games. Basically what you will do is use the included pieces and game board to build your very own RollerCoasters. They include lots of fun challenge cards so you can try to figure out what pieces to use and how to arrange them to make the coaster work. You can also just use the pieces to create your own masterpiece. The challenge cards go from easy to difficult so you can improve your skills as you go. It’s a lot of fun and a great way to make STEM concepts fun for kids.