Overview:  Dead / Spectating players appear as spoopy ghosts – transparent, but visible (?) to the living.  Ghost players: Cannot take damage. Noclip enabled. Can collide / bump into / jump on props. Phase through players and other ghosts. Can possess and push props around (via [SPACEBAR] key). Holding down [SPACEBAR] key charges punt strength. Props will be nudged in the direction that the player faces. A single prop can be influenced by multiple ghosts. Possessed props exhibit a colored outline / aura (?).