Published in the January and February issues of BBC Acorn User in 1991.
The original program was published in the January and February issues, and a level-editor was on the subscribers' disc for April 1991.
The author's name, "Bryan Cloud", was actually a pseudonym for the real authors, Dave Lawrence and Dave Acton.
|Title||HatTrix (including level-editor)|
|Publisher||BBC Acorn User (formerly Acorn User) (Redwood Publishing Ltd.)|
|Compatibility||A:✘ B:✔ Master: Untested|