Different generations, each gen has 2 different versions (to keep it simple) that are basically the same game, but they have version exclusive pokemon :) The rest are spin-off games
For Parents: Pokémon Sword & Shield came out last year, in addition there have been two or three DLC packs. Shining Pearl & Brilliant Diamond are the most recent ones. These are remakes of the Pearl & Diamond games from about ten years ago on the old DS handhelds. Theres also Pokémon Arceus Legends, this isn't out till next year. Expect delays on this.
This isn’t the new one, don’t disappoint your kids on Christmas Day (y)
(lol) (lol) (lol) (lol) na seriously man
Gotta catch ‘em all