The Streets of Panic Park by R. L. Stine
The kids trapped in HorrorLand thought they had reason enough to panic. That was before they reached Panic Park - a perilous place that makes HorrorLand seem like HappyLand. Now they must find a way to end this scary journey, once and for all. All of HorrorLand's shocking secrets will finally be revealed ...but can the kids ever make it out alive?