7 years: Slappy New Year! (2010)
18 years: Slappy's Nightmare (1999)
19 years: Attack of the Graveyard Ghouls (1998)
20 years: I Live in Your Basement! (1997)
21 years: Vampire Breath (1996)
22 years: The Headless Ghost (1995)
23 years: Attack of the Mutant (1994)
24 years: Piano Lessons Can Be Murder (1993)
25 years: Say Cheese and Die! (1992)