I do not know what happened to the program disk, so this is only the BOX and the MANUAL!
In case you want the software, you can download here
Blitz BASIC refers to the programming language dialect that was interpreted by the first Blitz compilers, devised by New Zealand-based developer Mark Sibly. Being derived from BASIC, Blitz syntax was designed to be easy to pick up for beginners first learning to program. The languages are game-programming oriented but are often found general-purpose enough to be used for most types of application.