form red to gold
.storing items such as healing items,Poké Balls, and key items in separate compartments
.updated battle screen showed how much experience points a Pokémon had until its next level and whether or not an encountered wild Pokémon's species has already been captured
.ability to hold items
.A time system was also introduced
.introduced the concept of evolution by methods other than leveling, using an evolutionary stone, or trading.
.Breeding
.gender
.Shiny Pokémon
.Pokérus
.2 new types
.splitting of the Special stat into Special Attack and Special Defense
gold to ruby
.Pokémon Contests
.A separate icon for each Pokémon
.Double battles
.Weather effects
ruby to pearl
.A new battle system is used for Pokémon Diamond and Pearl. In this new battle system, attacks are declared either physical or special by how the attack itself operates
there have been some major changes in the game but the formula as the old ones how ever if you don't think there not fun any more that's ok







