The Curious Consequence Of Negative Co-ordinate Space

a BASIC game by andy jenkinson.

for CCSCGC2023


In Spectrum BASIC the command PRINT AT 5,-4;"HELLO WORLD" works, and it really shouldn't.  What weird negative world are we printing in at that point.

Similarly PRINT ATTR (5,-4) looks into this mirror universe.



This game is born of exploring this upside down world, and the caverns within.



Features: 
Fairly pacy gameplay, given it is entirely BASIC
A UDG
12 levels
A tiny tune on the start screen
A score when you finish
REM statement instructions for DATA to make your own levels