Chris Ainsley has just released his browser-based 30th anniversary edition of 'The Beast', a conversion of the ZX Spectrum game originally by Linda Doughty (Linda Wright, back then) of Marlin Games. The ZX Spectrum version was awarded a 'Crash Smash'
This new version runs using the Adventuron system and features brand new graphics by Andy Green.
It can be played from its itchio page: https://adventuron.itch.io/thebeast