I have read a few review around the web, and none of them seem to be too enthusiastic about this game.
I got it yesterday as a xmas present, and I can say the opposite - it´s pretty much fun 
Once you figure out how NOT TO OVERTURN it´s quite fun, I don´t even need the gun to be on the 1st place...
Ok, there is no manual available and no hints - you have to learn it all by yourself by try and error, but hey - it is very funny and the music is really entertaining. Truly a game of the very early 90ies, if you ask me. I would give it a 75-85% rating, if there was a box and a manual.
What do you think - any opinions, good or bad? Lets hear it!