https://ranking.goo.ne.jp/column/6629/ranking/52750/

Pokémon Red and Green (159 votes)
Pokémon X and Y (102 votes)
Pokémon Diamond and Pearl (101 votes)
Pokémon Gold and Silver (91 votes)
Pokémon Ruby and Sapphire (69 votes)
Pokémon Black and White (44 votes)
Detective Pikachu (43 votes)
Pokémon Platinum (36 votes)
Pokémon HeartGold and SoulSilver (32 votes)
Pokémon Yellow (31 votes)
>if you include third versions and sequels
1. Red and Green + Blue + Yellow: 211 Votes
2. Diamond, Pearl and Platinum: 137 Votes
3. X and Y: 102 Votes
4. Gold, Silver and Crystal: 97 Votes
5. Ruby, Sapphire and Emerald: 91 Votes
6. Black and White 1/2: 66 Votes
7. Sun, Moon, Ultra Sun and Ultra Moon: 41 Votes
8. Sword and Shield: 27 Votes