Hi everyone. I tried looking for this game myself a few times and each was fruitless, so hopefully this time will work.
I am 100% sure the game is not sold anywhere, and I couldn't even find a download for it. Almost everything about this game leads to the Commodore 64 game, which is significantly different from the DOS version. Someone on
Moby Games even thought the game was never released on DOS; screenshots included in the
promo art do match with what I remember from the game.
I doubt the game was released abroad, so I hope somebody in Poland managed to save their own copy.