MAXSTAX Video Tutorials What is MAXSTAX? Watch the YouTube video to find out! See how SPEEDSTAX is played. See how SAMESTAX is played. See how SWAPSTAX is played. See how SKYSTAX is played. MAX and STAX invite you to join the next generation of Super Stackers! Read what some of Our STACKERS say! "The best thing about MAXSTAX is that it’s not just one game played over and over. I still haven’t heard my kids say they’re bored and that’s saying something." 5/5 Jenny R. "I feel smart when I play MAXSTAX because my mom says I’m really good at it." 5/5 Declan Y.