It is at the end of Snoopy's Flying Ace adventure.
After the football scene, pick up the football and go left. Use the football at Snoopy's dog house and it will knock his flying helmet down from the tree.
Dodge the Red Baron, then the searchlights as you make your way left. Hide behind the fence at the house, then jump up to hide behind the chimney. Go right, and get the mask from the scarecrow. Wear it and knock on the door.
you grab the mask on the scarecrow and go into the house
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.
The pumpkin head is one of the 4 games at the party, which occurs after Snoppy's adventure. The "pumpkin head" costume is not on Great Pumpkin Island. It is a costume change that can be triggered (and reversed!) by typing the costumizer command : Ctrl +Shift +P (all at once). This does not work as a costume on the island. You have to find the mask on the scarecrow and wear it.
When you go right from the damaged house, you walk right into the scarecrow. Take and wear the mask and knock on the door at the right side.
Once you have avoided the searchlights, take the mask from the scarecrow and wear it. Now when you knock on the door, they let you in.
No. And that is not how to get a costume for the Island's purposes. Ctrl + Shift + P toggles the "pumpkin head" jack o'lantern on the Costumizer. On Great Pumpkin Island, you have to get the costume that is provided on the island. At the end of Snoopy's Flying Ace adventure (dodging the searchlights) you arrive at a farmhouse. There is a mask on the scarecrow there. Get it and wear it when you knock on the door.
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.
There is no pigeon on great pumpkin island.
The pumpkin patch is to the right on Great Pumpkin Island. It was the only area shown in the island preview.
There are no buildings or upper rooms on Great Pumpkin Island.
The name of the island is Great Pumpkin Island. See the related question below.