Pokémon Black and White 2 is an intriguing entry in the franchise, as it served as a direct sequel to a previous entry, which hasn't happened before or since. It takes place two years after the events of Black and White in brand new locations in the Unova region, which feature Pokémon you couldn't capture in the previous entry.
New features include a side game known as PokéStar Studios, which had you filming your very own movie using Pokémon as actors and Pokémon World Tournament, which saw you battle trainers from previous games (including Brock and Misty!).
Pokémon FireRed and LeafGreen is a Game Boy Advance enhanced remake of the classic original games. Wait, but that was Pokémon Red and Blue, right? In the west, yes! Over in Japan though, the originals were known as Red and Green.
New in this entry was vastly updated visuals, the ability to connect to various different Pokémon games to collect over 350 Pokémon, and an enhanced user interface.
Pokémon Crystal was the ultimate version of Pokémon Gold and Silver, until another version came along and dethroned it. More on that later.
It allowed you to choose the sex of your character for the first time in Pokémon history, Pokémon sprites were animated, and a brand new feature – the Battle Tower – made an appearance. This allowed trainers to take part in fights that were just like in Pokémon Stadium.
Pokémon Platinum is the enhanced version of Pokémon Diamond and Pearl, and it introduced a Monster Hunter-like Wi-Fi Plaza to the mix. This included a bunch of mini-games that up to 20 players could participate in – a first for the series. You could also record battles, trade anonymously over the internet, and many Pokémon received new forms.
Pokémon Gold and Silver was released on the Game Boy Color back in the early noughties, and introduced a real-time clock to the mix that would keep track of the time and day of the week in the real world. This would trigger a variety of events, like when Pokémon appeared.
This is also the game where Shiny Pokémon first made an appearance – rare Pokémon that are different in colour to their normal variants – and Steel and Dark type Pokémon.
Also included were items that Pokémon could hold for various different effects, brand new Poké Balls, and the Pokégear, which is effectively an early smartphone.
In first place we have, of course, Pokémon HeartGold & SoulSilver, the Nintendo DS remake of the former best Pokémon Gold and Silver. It never really got any better than this, did it?
HeartGold and SoulSilver was designed to be faithful to Gold and Silver, while including a bunch of improvements that had been introduced to the franchise since. These include Yellow's ability to have a partner Pokémon follow you around, and the new features included in Pokémon Crystal, the previous ultimate version of this title.
Where does your favourite Pokémon sit in this list? Do you agree with where we've slotted in Sword and Shield? Let us know your Poké-feelings in the comments below.