As you play though the levels, you must defeat and trap Boos. There are 5 phases to traping a Ghost. 1. * Detection: Use your Boo Radar and Spook Goggles to find the Ghost. 2. * Dispersion: Use your weaponary to disperse the Ghost's energy (Each type of Ghost is weak to a difrent weapon). Corporeal beings (Non-Ghost enemies) are destoyed after this phrase. 3. * Detention: Use your capture stream to hold the Ghost in place. 4. * Daze and Destroy: With the Ghost in your grasp, slam the Ghost about until it is stunned. 5. * FINISH HIM!: Suck the disabled Ghost into your Poltergust.