Abstract: An attendant-free midway-style electronic game machine. The game machine may be configured to detect when a projectile has been actuated towards the target. An electronic controller in electronic communication with said detector, may be configured to automatically end a game play session once a predetermined number of said game projectiles have been detected as having been actuated by a user toward said target. And, a virtual attendant display is provided, in electronic communication with a game controller, to greet and instruct and interact with players in playing the game.

Abstract: An electron beam collimator formed by two pairs of multi-leaved corner plates connected by slideable members permitting the dimensions of the collimator to be altered.