MSP is short for MovieStarPlannet, where you have a character who you can personalize your user from skin colour and eyes to outfits and animations. you can add friends and make then best friends/boyfriend(or girlfriend). you have a status that you can change when ever you want. Also, there are loads of things you can do! honestly i love this game because its fun and you will be surprised how many people have youtube dedicated to this. thousands of people do, and make music videos and edits which are outstanding.