Dissimilar movement between parent and child in BGE In this blend file I have the following problem.


Every time I rotate the "Player" the camera rotates in a radius way huger than it should. Check the "Plane" to verify this or through the camera view.


It used to work fine till I appended the object "Flashlight", which is a child of the "Flashlight_empty". Also when I appended it, it spawned as "Flashlight.001" while I have/had no other object with the same name. I changed it back to "Flashlight". I think it has something to do with the physics boxes, cause when collision box option is deactivated the player has a sphere around it(maybe it is a default thing) while when I activate it goes with the box. I played with it and might have messed it. Anyways it might be something simpler also.
Your problem description indicates you have a non-uniform scale on one or more parents. According to your file the problem is the "Player" object. 

Solution:

Ensure the scale is set to (1.0, 1.0, 1.0).
You can do this by pressing &#9096; CtrlA > Scale.