|Unreleased Pokémon versions
|©Game Freak/Nintendo/Creatures, Inc. (The Pokémon Company)
The unreleased Pokémon versions are cancelled or rumored and unreleased editions of the Pokémon series games.
Note various games (namely Pokémon Gray, Pokémon Z, Pokémon Pink and Pokémon Moss) will not be covered here, because there isn't any substantive evidence of them being solid unreleased games.
Pokémon Picross (Game Boy Color)
This was a cancelled version of Pokémon Picross for Game Boy Color. Picross puzzles were also included in the Nintendo Space World demo prototypes of Pokémon Gold and Silver Versions.
Untitled online Pokémon project
A pitch for a Pokémon MMORPG by iQue which would possibly involve the NetCard. It was both for the Game Boy Advance and an unknown platform with a "PC screen" (possibly an actual PC). It would have been based on Pokémon FireRed and LeafGreen Versions with a number of differences.
Pokémon 2 (ポケモン２) is a tentative name for Pokémon Gold and Silver Versions, as first announced in CoroCoro August 1996.
A codename for Pokémon on the Game Boy Advance (AGB). It was mentioned in unused text for Pokémon Ruby and Sapphire Versions.
Pokémon X (non-3DS)
Pokémon X was a codename for a new Pokémon game before the release of Pokémon Crystal Version.
The developers have registered various unused Pokémon trademarks. However, trademarks do not necessarily imply planned games.