A screen assembly for a projectile-based simulator is comprised of front, right and left fabric panels that form a hitting bay with a front projector impact screen. Each fabric panel can be raised and lowered with respective roller assemblies that operate unison so that the fabric panels are simultaneously raised and lowered. Zippers are provided between each of the fabric panels that are configured to cause adjacent fabric panels to engage as the panels are lowered and to disengage as the panels are raised to allow the panels to wind upon respective roller assemblies.