The Challenge makes it not fun
This game has nice graphics and sounds. Play control is okay but there is one major problem, the Difficulty. Dangerous Dungeons is very challenging for no reason. Why did you make this game so hard? Most players do not like hard games.
I want to like this game, but the challenge ruins the fun. I made it through the first nine levels, only to find the Boss. A giant bowling ball that chases you while you jump around and watch out for spikes. This boss requires split second accuracy and almost no margin for error.
Please lower the challenge is your next game. If you wish to make a hard mode, have it after you defeat the main guy. It could be a nice bonus for players that enjoy super stressful situations.
It seems that many of the reviews involve the Difficulty. I do not think that they can all be incorrect. I hope my constructive criticism helps you.