User blog comment:NicktheDummy/Escape from Shudder Mansion cover art/@comment-33210834-20171020172501

> Anyway, I really don't know why most people don't like neither the cover of Slappy Birthday to You nor the cover of I Am Slappy's Evil Twin.

I dunno, I like to think it's either because of two things: The redesign of Slappy being based off the film and/or the minimalist background designs and lack of atmosphere seen more prominently in Goosebumps Horrorland and Classic Goosebumps covers.