Gen 1. Base.
Gen 2 . an internal clock, and a day / week system.
Held items
Removal of Certain locations, able to transfer forward from gen 1
Gen 3 , a new console, new features, and safari zone returned
Double Battles, abilities
Allowed Pokemon to be tranferred from non mainline games, to the mainlines.
downloaded items activate events in game
All other games lost compatability, so they brought back gen 1 as a remake, and allowed most gen 2 from the gamecube games. This became a trend.
Gen 4 Kept most features when moving to the Ds, however the game corner became controversial in the middle, and now is permanently removed from any future titles.
More items
pokemon activate events in future games
Began incompatabilities with platinum.
new means of bringing forward pokemon from an old gen, the advanced slot.
Allowed transfers from other nonmainlines, such as Manaphy, Deoxys, and Eruption Heatran, as well as berries and items from Battle Revolution
Brought back gen 2, and had a companion device that allowed playing pokemon without playing the DS.
Gen 5 made at the end of the Ds's Life, went a route most other gens didn't. forced to use new pokemon , forced to go online to plant berries, and catch exclusive pokemon via a time limited web app, which some enjoyed.
Removal of many features
Triple and Rotation battles
Focus on story and characters, which future generations have decided to replicate
New form of pokemon transfering via clever download play game to move pokemon from gen 4
3ds game that allowed the gen to live into the 3ds era
2 third additions, which were actually sequels to the first games respectively, and allowed history linking,
Gen 6, Mega evolution, Reverse Battles.
Type Rebalancing
3d
First gen without a 3rd version
Gen 1 4 focus
3rd gen remake with more megas, more incompatabilities with the first half.
no event items, transfered side games
Gen 7, Z moves
Gym removal.
Ultra beasts
2 3rd versions
Gen 8
Removal of many things
Big pokemon
