Can someone make a list of the changes and additions that were introduced in each generation?
I think Bulbapedia has a comprehensive list, but the basic rundown off the top of my head is like this:
Gen 2
-Dark and Steel types Jynx is Screwed
-Special Stat is split into Special Attack and Special Defense.
- Mystery Gift
-Roamers
-Time of Day
- Bottomless pockets
-Sex determination
-Breeding
-Egg moves
-Weather introduced. Politoed plots its ascendance into Godhood
-Branched evolution
-Pokerus
-Introduced unified Region mythology.
-Cartridge saves still die after 5 years.
-Shiny Pokemon
-IN COLOR!
Gen 3
-Pokemon contests
-Double battles. Competitive players are baffled
-Hail
-Abilities
-Removed time of day
-Removed backwards compatibility due to hardware issues
-Berries
-Secret Bases
-External Mass pokemon storage
-Battle Frontier
-Pokemon Forms
-Your rival is completely hopeless and gets replaced partway through by an asthmatic.
-Overhauled overall Pokemon data structure, IV's changed from 1-15 to 0-31, EV's now cap at 510 and are calculated differently. Females no longer have lower attack IV's, Shiny pokemon with 1:7 F:M sex ratio can now be female
-Cartridges no longer die after 5 years.
-Players conditioned to hate surfing
Gen 4
-Physical/Special Split. Dodrio is screwed
-3D overworld
-Full motion Cutscenes
-Gender based branched evolution. Intoduces
the best pokemon ever.
-Location based evolution.
-Time of Day (again)
-Single-species sexual dimorphism.
-Item finder and Pokeradar
-Flash no longer an HM, replaced with something even more aggravating.
-Event pokemon peak at 5
-Secret bases removed for being too awesome, replaced with Sinnoh Underground.
-HM's on the cusp of taking over the world, peaking at 8
- Games switch over to flash carts, awesome colored media gone forever.
-Introduces
the most worthless legendary pokemon
-Introduces
the best Legendary pokemon
-EV modifying held items
-God is now your slave
Gen V
-Triple battles. Competitive players still baffled.
-Rotation battles.
-Dream World. Dozens of pokemon no longer suck. Delibird still terrible
-Pokemon musicals
-Defog no longer an HM
-Non-pokemon opponents. (technically 3 but XD isn't a part of the main series)
-Entra-Link I completely forgot this existed until I had to think of what was added.
-Pokemon Fusion (for Kyurem B and W)
-Scrafty
-Explosion is reduced to 200 power and no longer halves defense in damage calculation. Damp now a waste of time.
-You are now regularly challenged by two annoying idiots instead of one.
-3D interiors
- EV's calculated after every battle for all pokemon.
Gen VI
-Fairy types. Hydreigon is screwed
-Mega Evolution. Mawile is no longer useless
-Cloud based pokemon storage
-Pokemon-Amie friendship feature
-Super Training (New EV method)
-First time EV's are displayed in-game.
-First time two sets of starters are given out during campaign.
-Sky Battles
-Horde Battles
-Moves with situational type-effectiveness
-Pre-DS era Pokemon receive cry modifications.
-8 directional movement
-Partitioned pokedex
-
-QQ Moe
RNG Abuse that 'mon, bro!
Part of me wants to, part of me is too lazy to actually get the parents set up for it and I am reluctant to touch Gen IV RNG stuff.
You are not alone. Due to this most of the Pokemon I use are usually found early in the game unless there's something I know I want later that I hold out for.
Yeah, the later they come the weirder it seems. (Not that I don't love the ones I pick out.)