Invincible Island ZX81 Edition

This is a port of the 1983 text adventure "Invincible Island" by Peter Cook for the ZX Spectrum. This is the first game I have created and published using my own custom engine, MATE (Mancave Adventure Text Engine), designed for low memory microcomputers and primarily targeting the 16K ZX81, although in time I will look to port to other systems. Using the MATE engine and associated scripting tool I was able to create the game across two evenings! Due to memory limitations there are some differenc...