This game looks to have been made with the same engine as Duck Quest:
<http://macintoshgarden.org/games/duck-quest>

It's an exploration game in which you explore small levels filled with
random ennemies and goodies. The goal is to find the exit; basically
the same as Duck Quest. The differences are: You gain experience
points by killing ennemies, you can collect money and diamonds and you
can get poisoned. There are also more ennemy types and thieves who can
steal your money, etc...

From the author: In this arcade game, you will need a good combination
of skill and luck to achieve high scores. The object of Space Dungeon
simple. You are lost in a dungeon somewhere in space (hence the name).
While you explore the dungeon, you gather gold and try to keep from
getting killed from the various monsters. But don't fret, there are
many items scattered about to help you on your way. While you are
exploring, you will no doubt find an exit, but is it really the exit,
or does it bring you deeper into the dungeon?

A note about the manual download available from above:
The manual is a PDF'ed version of the readme files included in the
download.

Compatibility
Architecture: 68k PPC