Pokémon Game Feature Progression

Throughout the Pokémon game series, each game featured its own unique features that were exclusive to that specific Pokémon game. As the game franchise progressed over time, the newer games started to utilize features from a number of the previous games. Below is a list of changes in features throughout the franchise:

Red, Blue, and Green Version
Being the first games of the franchise, Pokémon Red, Blue, and Green mainly established the games basic gameplay such as training, trading, names, etc. The only features that made Red, Blue, and Green unique was that they only utilized a single color scheme(Red being red, Blue being blue, etc). Every location, scene, and character had their own design but used the same colors and shading depending which game it was. The only things that made locations in the games unique were the music and obstacle layouts. The length of the game was limited to a single region of Japan being, Kanto.

Yellow Pikachu Edition
Pokemon Yellow version(also known the Pikachu Edition) was one of the more popular and recognizable Pokémon games in the franchises development because it was the first game to utilize detailed color schemes and character designs. Rather than using a single color scheme for the entire game, every character and Pokémon in the game was careful designed and colored based on their designs in the manga and anime. The locations of the game as well as the region of the game remained the same as the previous games. However, each area and town used its own unique color scheme to distinguish themselves from the others. Yellow version was also the first and only game to utilize the ability to have one of the players six Pokémon follow behind him. However, it was exclusive to your assigned starting Pokémon which was Pikachu. This feature was discontinued until the re-release of Gold and Silver.

Gold and Silver Version
Pokémon Gold and Silver underwent the largest number of changes(some of which were exclusive to them). Gold and Silver were the first and only games in which everything had its own color and design which eliminated the single color scheme location concept. Gold and Silver were the first and only games until the re-release to feature the ability to change the time of the game which would after the games time of day(night or day). They were also the first games to feature Pokémon genders and Eggs. As well as a variety of new Pokémon and the ability to trade them with the older games. The game also featured new starting Pokémon and the ability to traverse from the new region, Johto, to the region from the previous games being Kanto. The game also utilized the ability to contact and rematch previous opponents and the ability to carry a radio and cell phone.

Crystal Version
Pokémon Crystal utilized all of Gold and Silvers features but was the first game to utilize Pokémon animations in which summoned Pokémon performed brief moving animations during battle sequences. The feature was not reused until Emerald that versions that followed it.

Ruby and Sapphire Version
Pokémon Ruby and Sapphire were the first Pokémon games to utilize weather changes. They were also the first games to utilize 2-on-2 Pokémon battles in which both trainers could summon two Pokémon at a time rather than the traditional 1-on-1 layout. The only features to carry on from the previous games were genders, eggs, and further graphic improvements.

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