The ProjeX Projecting Game Arcade is an all in one package featuring two light guns which plug into a base unit that not only runs the game but also projects the animated images that you will be targeting with its pair of LED projectors.
This game comes packaged with three different types of animated targets, each one escalating in difficulty. These include a basic bullseye, a UFO, and (surprise!) an alien bug.
Changing the games and number of players is a very simple effort requiring only plugging or unplugging one of the interchangeable blasters and pressing the red button (which also doubles as the unit's power button).
The blue button switches between three levels of difficulty, specifically beginner, medium, and advanced.