Of all the directions people like to go, up may be one of the most popular. In the aptly-named arcade game Stack your task is to build a tower upwards and as high as you can. Unfortunately there are some small complications along the way. You have sliding building blocks going back and forth over your tower and you have to time it just right, so they fit perfectly on top of each other. If they don't, any overlap will be swiftly cut off, making the next level smaller and more difficult to stack blocks on. Keep building and stacking until you miss, and boast to your friends about the amazing high score you reached in Stack!