Pokémon turned 25 on 27 February!
That's right it's been 25 years since Pikachu was first introduced in the world, and since then the series has grown to become one of the most successful gaming franchises of all time.
In fact, to date, more than 368 million Pokémon video games have been sold worldwide!
From the games, to the TV series and trading cards, Pokémon has had a huge influence on the world since it was created.
We've been taking a look back at the history of Pokémon to see how it started and how much it's grown in 25 years.
So, if you want to be a Pokémon Master... of knowledge... then take a look!
Pokémon was invented by a Japanese man named Satoshi Tajiri and his friend Ken Sugimori, who is an illustrator.
Back in 1982 Satoshi started a gaming magazine together with his friends called Game Freak, but after a while he decided to start making his own video games, instead of writing about them.
In 1989 Satoshi turned Game Freak into a gaming company, and together with his friends they released a few games such as Pulseman, Yoshi and Mario & Wario, which did pretty well.
In the early 1990s, inspired by his childhood exploring forests and finding bugs and tadpoles, Satoshi came up with the idea for Pocket Monsters (or as it's better known Pokémon), and pitched it to Nintendo.
Nintendo was a bit unsure about Pocket Monsters at first, but eventually accepted, and Satoshi spent the next six years working with legendary game maker Shigeru Miyamoto (the man behind Mario and The Legend of Zelda) to make Pocket Monsters a reality.
On 27 February 1996, Pocket Monsters was released in a Red and Green version for the Gameboy, in Japan.
The games were on a cartridge, and players could trade Pokémon using a cable to connect to each other's Gameboy.
The games went on to sell millions of copies, and were later released to the US in 1998, and the UK a year later, as a Red and Blue version (instead of Green).
The name was also shortened from Pocket Monsters to Pokémon.
Since then, seven more generations of Pokémon games have been released, from Gold and Silver, to Ruby and Sapphire, Diamond and Pearl, Black and White, X and Y, Sun and Moon, and most recently Sword and Shield.
With each new generation more Pokémon joined the games, in fact there are now around 898 different species of Pokémon! (So it's going to take a long time to Catch 'Em All!)
After the success of the first games, a company called Media Factory created the Pokémon Trading Card Game (or TCG for short).
The first set of cards was released on October 20, 1996, containing 102 cards, with drawings by Ken Sugimori, Mitsuhiro Arita and Keiji Kinebuchi.
The cards soon became very popular, and three years later in 1999, they were introduced to North America by Wizards of the Coast and shortly after the rest of the world.
Pokémon card tournaments sprang up, where players could battle it out, and there is now even a world championship tournament.
Since then, more than 30 billion cards have been printed, and some people will even pay hundreds of thousands of pounds for some of the more rare cards.
In 1997 Pokémon was turned into an animated TV series in Japan.
It followed the story of a boy named Satoshi (named after Satoshi Tajiri himself), as he set off on a journey to try to become a Pokémon master with his companion, Pikachu.
When the series was released worldwide, the producers changed Satoshi's name to Ash Ketchum.
Since then, there has been 23 series of Pokémon, and more than 1,000 episodes of the show!
In 2019 Ash finally beat the Alola Pokémon League, to became a Pokémon Master in the Sun and Moon series.
A year after the first TV series dropped, a movie hit cinemas in Japan.
The film, called Pocket Monsters the Movie: Mewtwo Strikes Back, followed trainer Ash Ketchum and his friends as they are invited to a mysterious island where they meet the powerful Pokémon Mewtwo.
The film was a huge success and was released worldwide a year later.
Since then 23 animated films have been made, and a live action movie, Detective Pikachu which starred Ryan Reynalds.
In 2016 a pretty big game landed on our phones and made waves around the world upon its release: Pokémon GO.
The game was pretty ground-breaking, as it allowed players to explore their neighbourhood in the real world, using satellite and augmented reality technology to make it seem like the Pokémon on their phone screens, were really there.
Pokémon GO smashed download records on its release, and has since been downloaded more than a billion times! Now that's a lot of Pokémon trainers!
Two years later in 2018 Nintendo released a remake of the Pokémon Red and Blue and Yellow games in the form of Let's Go Eevee and Pikachu.
New technology meant that players could use the Nintendo switch controllers to throw pokéballs, and using a special pokéball controller, could even take them out for walks.
The game broke records in its first week of release, and sparked a new wave of Pokémon remakes, including the most recent game announcement… Pokémon Snap, which will be out later this year.
The Pokémon Company has hinted that there could be more remakes on the way, so fans will have to wait and see!