Ah I finally figured out how to make this work :) Now if you have ever player my side-scroller game "Mario Recharged" you will notice that it tends to lag a lot. That game used my "Perfect Sidescrolling Engine v1.0" which was a decent engine but it used a diffrent sprite for every piece of area which I am fairly sure was the cause of the lag. In this engine you can put as much area as you want in and it won't lag. This is because this only uses 2 sprites for all of the area. To make it work both platfrom sprites must contain all of the costumes that make up the area.