Get the mask from the scarecrow and wear it. Knock on the door and you will be at the Halloween party.
There is no Snoopy Island on Poptropica. Snoopy and "Peanuts" characters appear on Great Pumpkin Island. (see related question)
go left on great pumpkin island
Go left to Snoopy's doghouse and use the football. It will knock Snoopy's helmet out of the tree.
You click to make Snoopy blow the leaves. You need 5 added to the leaf pile.
You have to get every note that comes up on the screen.
you grab the mask on the scarecrow and go into the house
you help snoopy when you get the football from charlie brown and lucy after they leave from the backyard. use the football to get snoopy's goggles from the tree near his doghouse. hope this helped!
Charlie Brown is on the sidewalk when you enter Great Pumpkin Island, but he spends much of the game in his back yard left of Main Street. Snoopy is at his dog house at the far left of the island. Your first task is in the pumpkin patch to the far right. You have to weigh the pumpkins, roll one back to Lucy's house, give Pigpen the bag, and give Linus the lemon sucker. Then you can go left where Charlie Brown is collecting the leaves with Snoopy.
After Snoopy blows the leaves into the pile, Linus will jump into it.
The leaf-blowing game starts when you have finished the pumpkin scenes (picking and rolling the pumpkin, giving the bag to Pigpen, and giving the sucker to Linus). Go left into Charlie brown's back yard. The Flying Ace adventure starts after the football scene. Take the football and go left to Snoopy's doghouse. Use the football and it knocks his helmet down from the tree.
The plane is Snoopy's doghouse. When you finish the football scene, pick up the football and use it at Snoopy's doghouse to knock the helmet from the tree.
Pick up the football and go to Snoopy's doghouse. Use the football and it will knock the goggles out of the tree onto Snoopy's head.