For sale is an unauthorzied / bootleg copy of Trouble Shooter for the Sega Mega Drive. This game was manufactured in the 1990s.
 
As can be seen from the pictures, the game is tested and works. However, it acts strangely. When the game first loads up, there are some garbled graphics and the game makes some odd noises. This could be because of the game being hacked and copied, or perhaps there is some other problem. However, after the actual game begins (press start from title screen), everything seems to be fine.