The first 2 links are for retro games. The first link is for the emulator for the games. The second one is for downloading the games to put into the emulator. In order to put the game into the emulator, you must download it onto your computer first, then you can choose to open it through the emulator. DO NOT try and open it through the files on the computer. In order for you to play the game, you need to open the file through the emulator for it to work!!!