Buy Cheap Pokemon Radical Red Keys & Digital Downloads mod

Summary

Radical Red is a QoL hack that has many new features, such as:

Physical/Special split + Fairy Typing
All Pokémon up to Gen 8 obtainable (with some exceptions, see further down)
Moves up to Gen 8, including some of the Isle of Armor DLC moves!
Updated Pokémon sprites
Mega Evolution
Abilities up to Gen 8
Important battle items up to Gen 8
Raised level cap to 250, although this won't be super relevant until post game is added
Raid Battles
Reusable TMs
Expanded TM list
Additional move tutors
EV Training Gear
Ability popups during battle
Gen 8 Exp Share
Hidden Abilities
Day and Night
DexNav, which allows you to search for Pokemon with hidden abilities and other neat things!
Even faster turbo speed (!!!)
Abilities like Magma Armor have field effects like recent Gens
Destiny Knot, Everstone have updated breeding mechanics
... and more!

Storyline

Pokémon FireRed and LeafGreen takes place mostly in the fictional region of Kanto. This is one distinct region of many in the Pokémon world, which includes varied geographical habitats for the Pokémon species, human-populated towns and cities, and routes between locations. Some areas are only accessible once players acquire a special item or one of their Pokémon learns a special ability.[11] Near the end of the plot, the protagonist is able to venture to the Sevii Islands, a new area not present in the original Red and Blue games. The Sevii Islands are an archipelago of seven islands and contain Pokémon normally exclusive to the Johto region, as well as several post-game missions. After the aforementioned missions on the Sevii Islands are completed, the ability to trade with Ruby and Sapphire for Hoenn-exclusive Pokémon becomes available.