This is just a picture of ROBLOXNoob246's project showing the effect of a glitch. When you reach the end of the game, you can clip through the wall. Whats interesting is the level backdrop will go back through the cycle of level backdrops but the other variables will be recycled. The backdrop is set so once you pass a certain level (level 22 I believe) the backdrop will stay the same, the level backdrops, however, will keep recycling because the level variable is set to change to the next level backdrop, in other words, when it reaches the end of the backdrops and it supposed to call the next backdrop, it will call the first one. The reason Sonic's speech bubbles won't pop up is simply because we technically not on the levels they first appeared on since the level variable never stopped going up every time we reached the end of the screen. I refer to this as an overflow. Because the level backgrounds kept recycling but the backdrop didn't. I got that interesting picture.