![]() ![]() There is no game play difference.ĥ Screw NES Game List 10-Yard Fight The differences between 5 screw and 3 screw games are purely cosmetic. Nintendo has never spoken publicly about the thought process behind the change so it is just speculation in the community. Tengen and other companies were making unlicensed games, so security screws might have been attempt to make unlicensed games a little harder. Others think Nintendo made the change for security reasons, basically trying to make the cartridges harder to open and inspect. ![]() People speculate that Nintendo made this change to save money (two fewer screens spread out over millions and millions of cartridges adds up). ![]() They also have two notches at the top where the bottom half of the cartridge is inserted into the top half (see blue squares above).Īt the same time, the screws were changed into proprietary versions that need special hex screwdriver bits to remove. These have two screws in the bottom corners and one in the middle (see red circles above). The screws are standard, flathead screws.īy 1988 Nintendo decided to completely switch all cartridges to 3 screw versions instead. One in each corner and one in the middle (see the red circles in the photo above). The 5 screw cartridges are sealed together using 5 screws. This article will explain the history behind this, list all the 5 screw variations, and compare 5 screw prices vs 3 screw prices. Some NES games have 5 screws on the back while most have only 3 screws. ![]()
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