This means that when the hero jumps or moves off the edge of a platform, he or she should return quickly to the ground (or another platform). The hero should never fall through a platform or the ground. Screens Your platform game will be a side-scrolling game. In this style of game, the scenery changes as the player moves horizontally across the screen. While many modern side-scrollers (including Super Mario Bros.) scroll smoothly as the player moves, our game will use a simpler system and consist of screens.