The following are the GameShark codes to unlock islands 8 and 9 in Pokémon Leaf Green. The codes are Navel Rock - 82031dbc 2402Birth Island - 82031dbc 3802.
gameshark
You have to catch 6o diffrent Pokemon... (good luck)
you need to fix that professors machine on the sevii islands (the seven islands) the ones that you unlock after the league
first you bet the elite 4 and then go to ciolol and then you need to find the gems
hmmm... you can catch almost all kanto hmm and after u unlock the extra islands you can catch many more...
You cant
you have to beat the elite four and then go talk to pro. oak and i think he gives you the pass.
It's seavault canyon and it's on 1 of the 7 islands after you beat the elite four when you unlock the islands check your townmap to see which island it's on
you must have gameshark/action replay
After getting the national pokedex get the ruby and give it to celio. he will give you the rainbow pass for islands 4-7.
The key is in the Pokemon mansion.
with the tri-pass you unlock islands 1-3. with the rainbow pass you unlock islands 4-7