One of the very first games ever released on the ST. (It came out in 85, or early 86 BTW, not 1987).
It was released to a lot of initial hype, but its achieles heel was that it was very difficult to control. works on color or monochrome, but you may need to load the disk-based TOS 1.0 to get it to load.
I remember when I first tried playing Brattacus on the Atari ST back in 1989. The game was a little complicated for me back then since you had to move your character using the mouse. Since I played this again, I got the hang of moving my character around with the mouse and from what I see, it sure is a great adventure game. Brattacus can be found on Automation compact disk 55.
Too bad this game has no picture (yet). Of all the games that I got with my Atari 520 ST (used), this one had the most impressive graphics. When I boast about the Atari technology back in the 80's I always mention this game...it was really ahead of its time. Wish I could get my St working again...sigh