These were a series of children's horror books, the covers were always a different colour and looked like goo/blood dripping down the page, very scary at the time even my mum got scared reading one!!
They were written by American author R. L. Stine and published by Scholastic Publishing. most plots featured kids being involved in scary situations.
Sixty-two books were published under the Goosebumps title from 1992 to 1997.