Why Does My Psp Game Control Itself?

Because it's obviously been possessed by an evil video-game-playing demon. You should go to your nearest priest and have it properly blessed and purified... It will probably need to be sacrificed to the god of your preference to make sure it is received into heaven in it's purified state. You wouldn't want it to go to hell, after all, would you?

Seriously... You are asking a technical question, but are providing basically no information. How can you possibly expect anyone to be able to answer your question, when you don't tell us anything?

Be as specific as you can... When did this start? What do you mean 'control itself'? Do you turn on the game and it literally plays from level one and makes serious progress toward beating the game, or is it just making your onscreen character run in circles in a particular direction? What happened to the unit in the days before this problem occurred the first time? Is it a slim or fat psp (yes, it matters)?

I wish you the best of luck with this and any further problems you may have, and hope you are more specific in future questions...

It is more than likely either your Analog stick or your Faceplate isn't sitting flush and is putting pressure on the Analog stick to make your character move. I can offer a free diagnosis and provide a repair service offer. If it is the Analog stick we charge only $50.00 to fix it. This price includes priority shipping, a 30 day warranty on repaired parts, and labor.