How do I make an object rotate towards a moving object?

I have a box which moves on the Z axis. This is the player-controlled cube.
I have a cylinder which rotates on the Z axis.
I want the cylinder to always look at the player.

Note: I don’t mind a little python. The more I use it, the more I learn it.

trackto actuator


Here’s a couple kittens

I am sorry, I meant track to actuator. It is in edit object group. Also try to check 3D button