Analysis of information sources in references of the Wikipedia article "Pokémon Red e Blue" in Galician language version.
The Game Boy titles Pokémon Red and Pokémon Blue were released on September 27, 1998. They became the fastest-selling Game Boy titles ever, selling a combined 200,000 copies in the first two weeks of their availability. By the end of 1998 they had sold four million units in the US alone across three versions. In Japan, across four versions the game had sold nearly 12 million copies.
MissingNO is a programming quirk, and not a real part of the game
