Main games:
- Red & Blue
- Yellow
- Gold & Silver
- Crystal
- Ruby & Sapphire
- FireRed & LeafGreen
- Emerald
- Diamond & Pearl
- Platinum
- HeartGold & SoulSilver
- White
- Black 2 & White 2
- X & Y
- Omega Ruby & Alpha Sapphire
- Sun & Moon
- Ultra Sun & Ultra Moon
- Let's Go Pikachu & Let's Go Eevee
- Sword
Only haven't played Black and Shield but if u played one version u basically played both anyway.
Spin-Offs:
- Pokemon Trading Card Game
- Pokemon Snap
- Pokemon Stadium
- Pokemon Colosseum
- Pokemon Ranger
- Pokemon Ranger: Shadows of Almia
- Pokemon Ranger: Guardian Signs
- Mystery Dungeon Red Rescue Team
- Mystery Dungeon Blue Rescue Team
- Mystery Dungeon Explorers of Darkness
- Mystery Dungeon Gates to Infinity
- Super Mystery Dungeon
- Mystery Dungeon Rescue Team DX
- Pokemon Rumble World
- Pokemon Rumble Rush
- Pokemon Art Academy
- Pokemon Battle Trozei
- Pokemon Picross
- Pokemon Quest
- Pokemon Shuffle
- Pokemon Go
- Pokemon Dream Radar
- Pokemon Masters EX
- Pokemon Cafe Mix
- Magikarp Jump
- Pokedex 3D
- Pokken Tournament DX
- Pokemon Smile
- Pokemon Home
- Pokemon Bank
- Pokemon Box
- Red & Blue
- Yellow
- Gold & Silver
- Crystal
- Ruby & Sapphire
- FireRed & LeafGreen
- Emerald
- Diamond & Pearl
- Platinum
- HeartGold & SoulSilver
- White
- Black 2 & White 2
- X & Y
- Omega Ruby & Alpha Sapphire
- Sun & Moon
- Ultra Sun & Ultra Moon
- Let's Go Pikachu & Let's Go Eevee
- Sword
Only haven't played Black and Shield but if u played one version u basically played both anyway.
Spin-Offs:
- Pokemon Trading Card Game
- Pokemon Snap
- Pokemon Stadium
- Pokemon Colosseum
- Pokemon Ranger
- Pokemon Ranger: Shadows of Almia
- Pokemon Ranger: Guardian Signs
- Mystery Dungeon Red Rescue Team
- Mystery Dungeon Blue Rescue Team
- Mystery Dungeon Explorers of Darkness
- Mystery Dungeon Gates to Infinity
- Super Mystery Dungeon
- Mystery Dungeon Rescue Team DX
- Pokemon Rumble World
- Pokemon Rumble Rush
- Pokemon Art Academy
- Pokemon Battle Trozei
- Pokemon Picross
- Pokemon Quest
- Pokemon Shuffle
- Pokemon Go
- Pokemon Dream Radar
- Pokemon Masters EX
- Pokemon Cafe Mix
- Magikarp Jump
- Pokedex 3D
- Pokken Tournament DX
- Pokemon Smile
- Pokemon Home
- Pokemon Bank
- Pokemon Box