Sprite Basic is an extension for Commodore 64 BASIC that adds three commands for dealing with sprites more easily.  This extension was published in the December 1983 issue of Compute!s Gazette. Here is the description for the program from the magazine:

If you've always wanted to create sprites on your Commodore 64, but have been put off by all the complicated POKEs, this article is your answer. It lets you modify BASIC to add three new sprite commands to make the job much easier. An accompanying side article also explains the rudiments of sprite design.