John Evans is know for large, complex games that are often unfinished or broken. This game is the most polished of his that I have played. It is complete, and free of typos.
However, the plot and puzzles are confusing. You are wandering around a cave with colored crystals and rooms corresponding to elements. There are tons of interactions that just make no sense, and some guess the verb
Recommended, with hints, only for fans of big puzzles games.