I've seen favorite game, generation, and all that jazz, so why not a least favorite? Just don't bash the games you dislike, because for someone, it was the first game they picked up.
My least favorites at the moment are FireRed and LeafGreen. I mean, at the time, they seemed like great revamps of the original Red and Green, but they didn't have enough pazazz to them for a replay. It was just "eh" after you beat them and you were done. You did the Ruby and Sapphire mission and traded your best Pokemon over either to or from RS and you just forgot about the game. They're not bad games overall, but compared to the rest of the series, they just fall short.
Edit; I'm stupid and left my least favorite off the poll. Fail.
My least favorites at the moment are FireRed and LeafGreen. I mean, at the time, they seemed like great revamps of the original Red and Green, but they didn't have enough pazazz to them for a replay. It was just "eh" after you beat them and you were done. You did the Ruby and Sapphire mission and traded your best Pokemon over either to or from RS and you just forgot about the game. They're not bad games overall, but compared to the rest of the series, they just fall short.
Edit; I'm stupid and left my least favorite off the poll. Fail.