I purchased Project Hyrax a month or two ago.
The design and formatting are well done. It's a text-based game where you receive messages from a time traveller.
The writing seems like it is not from a native speaker, with numerous typos and grammatical errors. Also, many of the choices are clearly irrelevant to what happens after, adding nothing to the gameplay, and only two choices are available at a time.
However, the timed messages and the length of the game drew it out to over a month as I tried to finish it to write a review. It eventually grew on me, and I found myself having a good time.
I would have given it 4 stars for that reason, but it froze on me after many, many choices, and I couldn't get it unfrozen.