Cuboy Quest 3 is one of the best games of the series in which a man tries to escape from a few levels. If this is the first one you play, you should be prepared for a lot of shooting and problem solving until you reach the magical exit door.
The concept behind Cuboy Quest 3 is very simple, yet interesting: find a way to open the exit door by any means necessary. Your job will be a little bit easier considering the fact that you have a gun and that most doors will open whenever you shoot a target. This is why you should first focus your attention on hitting the moving or stationery bull's-eye and see what happens. If the door opens, you can run towards it and unlock the next level. If the door stays locked, you will have to figure out what other mechanism you should trigger before you are allowed to move on. This game is not as easy as it sounds. There are plenty of enemies that you will encounter and quite a few traps that can put an end to your adventure. On the bright side, you can restart the game as many times as you want with no penalty.
The puzzles you will have to solve in Cuboy Quest 3 are not even close to impossible, but some of them can be tricky. This is why you should always start by experimenting and see what you can do with the tools you receive.