Similarly like SNES Repro Carts, NES Reproductions Carts are not officially released games. As a consumer, if you buy NES Repros you are not getting an official product that will acquire value in the future. In our store we sell originally developed NES Games, manufactured with high quality components. We do not use donor cartridges to make our NES Games. By ordering from our website, you are supporting the hard work programmers and homebrew developers put into the games that we carry. Do not settle for NES Repro Carts, get officially released, high quality NES games from our store!