>>31898183PokeMMO is pretty much just 3rd Gen Pokemon with some things thrown in to make it technically an MMO, and the breeding system completely redone to function both as a money sink and to make it so you can't just pump out infinite Pokemon to sell on the auction house.
And by that I mean it literally requires ROMs of 3rd gen Pokemon games to pull data from. So you've technically already seen a bit of either Pokemon Firered/Leafgreen or Pokemon Emerald, depending on whether you started in Kanto or Hoenn.
Honestly, I would recommend switching from playing PokeMMO to just playing the ROMs themselves using Visual Boy Advance for your 3rd-gen Pokemon experience. PokeMMO makes a lot of changes away from the standard formula- mostly impacting your in-game income- in the name of making it an "MMO", such as the aforementioned breeding system, the severe nerfing of Berry farming and the Pickup ability (both of which would normally function as a way to farm for cash and other items), and the severe undercutting of how much cash you get from Trainer battles
After all, if you could get enough cash to play through the game from what you can do in "single player", then the only real purpose of the MMO capabilities become pretty much what you can do using the online functionality of the current-gen 3DS games and the novelty of seeing other PCs in your game world.