Once you finish the football scene, take the football and go left to Snoopy's doghouse. Use the football and it will knock the flying helmet from the tree, starting the Flying Ace adventure. Avoid the Red baron, and then the searchlights on the ground as you go right. Get the mask from the scarecrow and wear it, and you can knock on the door to the farmhouse, which is actually the party.
There is no key. Get the mask from the scarecrow and wear it. Knock on the door and you will be at the Halloween party.
Get the mask from the scarecrow and wear it. Knock on the door and you will be at the Halloween party.
That is not a feature of the island. You can get a costume change using the costumizer by pressing the 3 keyboard keys Ctrl+Shift+P all at the same time. You remove it the same way. You cannot use this or any other costume for the halloween party on Great Pumpkin Island. You have to get the mask from the scarecrow in Snoopy's adventure.
At Violet's house, the yellow house to the right of Linus and Lucy's blue house. But you go there by way of a Snoopy adventure, not through the house.
It starts after Snoopy's adventure as the Flying Ace. When you finish the football scene, pick up the football and go left to Snoopy's doghouse. Use the football and it will knock his helmet down from the tree.
You don't wait. You have to finish the pumpkin patch scene, then Snoopy's leaf game, then Lucy's football scene with Charlie Brown. (see the related question). Use the football at Snoopy's doghouse to start the Flying Ace missions, which lead eventually to the party. (The mask you need is on a scarecrow at the end.)
Once you have the party invitation, and the pen, you can go outside, far left, to where Charlie Brown and Snoopy are gathering leaves.
The green mask is on a scarecrow at the end of the "behind enemy lines" adventure with Snoopy. After avoiding the searchlights, go right and get the mask, which you have to wear (temporarily) to enter the party.
There is no shed, but there is a farmhouse in Snoopy's Flying Ace adventure. When you arrive at the farmhouse, get the mask from the scarecrow and wear it. Now when you knock at the door, you go inside and it is Violet's party.
Charlie Brown's backyard is in both of the places left of Main Street. But you don't find Snoopy there until you complete the first part of the island. Go to the pumpkin patch, pick out a pumpkin for Lucy, and roll it back to her house. Take the bag from Linus and go outside to give it to Pigpen, then go back in and give the lemon sucker to Linus. Once you have your invitation to the party, and the pen from the desk, you are ready to see Charlie Brown and Snoopy gathering leaves in the backyard.
The mask that serves as your "costume" for the Halloween Party is on a scarecrow in occupied France. Actually, it is Snoopy's imaginary adventure against the Red Baron. When Chrlie Brown and Lucy leave the football, pick it up and throw it at Snoopy's doghouse (far left). It will knock down the aviator's helmet for Snoopy.
the answer is NO.