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If I create a new game and, without doing anything to it, I preview it, I hit start game, then without touching the keyboard my character moves left and if I try to move him with the arrow keys it does nothing. Please help and thx in advance
Are you using a gamepad? Sometimes when taht happens the gamepad is plugged in and the analog stick is being poressed by something. If that's the case it can sometimes remember that position.
I suggest unplgging the gamepad and restarting the computer.
If you don't own a gamepad then I have no idea what it could be.