Today I went to GameStop, and I noticed a copy of Pokémon Crystal in the used GB section. However, this copy was different from the rest. It had a gray GameBoy cartridge (not GBC, and not blue w/ sparkles). I also could not find Nintendo's golden seal on it anywhere. Just for fun, I purchased the game. When I got home, I tried playing it, and it seemed to be identical to my real Crystal version. Do you think the Crystal version I bought today was a fake?