You need the pen fron Linus's desk to complete the football scene. (Before this, Snoopy has gathered the leaves, and you have gone with Linus to use his blanket at the mailbox.)
After Charlie Brown misses the football, pick up the football and go left. Snoopy is on top of his dog house. Use the football and it will knock the goggles down from the tree onto Snoopy's head.
You find Snoopy in Charlie Brown's backyard, left of Main Street. He will not be there until you have gone to the Pumpkin Patch (right) and completed the tasks there. Once you have your party invitation from Linus, you can go left and do Snoopy's first mini-game (blowing leaves).
Leaf Blowing
Complete the pumpkin quest, give Pigpen the bag and give Linus the sucker. Go left into Charlie brown's backyard and Snoopy will play the leaf-blowing game.
Flying Ace
Play the football scene with Lucy and Charlie Brown. Pick up the football and use it at the doghouse. The helmet falls on Snoopy's head and the adventure begins.
By using the football.
He is with Snoopy in his backyard, but only after you have gotten a pumpkin for Lucy, a bag for Pigpen, and a lemon sucker for Linus.
On Great Pumpkin Island, Snoopy and Charlie Brown are in front of the pumpkin patch, searching for the Great Pumpkin. They are part of the Halloween-themed adventure where players help them navigate through various challenges to find the mysterious holiday figure.
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.
Charlie Brown's back yard is to the left of Main Street, with Snoopy's dog house at far left. You will not find anyone there until you have completed the pumpkin patch scene: roll the pumpkin to Lucy's house, go outside and give the bag to Pigpen, then give the sucker to Linus. Now you can play the Snoopy leaf game in the backyard.
You have to go to Linus (by the mailbox) and he will send his letter to the Great Pumpkin. If you have the Pen from his house, go left and play the football scene with Lucy and Charlie Brown. You can then use the football at Snoopy's doghouse to get the flying goggles and start the Red Baron scenes.
Although you see him at the start of the island, and in the discussion with Linus about the Great Pumpkin, Charlie Brown does not appear in his backyard until you have completed the Pumpkin selection, Pumpkin rolling, and Pigpen parts of the game. 1) In the Pumpkin Patch, weigh the pumpkins and give the heaviest to Lucy 2) Roll the Pumpkin safely to Linus and Lucy's house 3) Take the bag from Linus and give it to Pigpen outside 4) Give the lemon sucker to Linus and pick up his Pen from the desk Now Charlie Brown and Snoopy will appear at the leaf pile in the backyard.
They are in the tree above his doghouse. When you complete the football scene with Lucy and Charlie Brown, pick up the football and go left. Use it at the doghouse to knock down the goggled helmet and begin Snoopy's Flying Ace adventure.
The Red Baron is in Snoopy's imaginary combat scene. The combat scene contains Snoopy flying his doghouse, trying not to get hit by the enemy plane (the Red Baron), and also Snoopy and your character in enemy territory (avoiding the searchlights). At the end, you find your Halloween costume, a mask, on a scarecrow near the farmhouse.
Get the bag from Linus and bring it outside to Pigpen (to the right). Bring the lemon-flavored sucker back to Linus, and you get his invitation. Pick up the pen from the desk and then go outside and to the far left to find Snoopy and Charlie Brown.
Your "costume" is a scary mask from a scarecrow in Snoopy's adventure.You get the mask from the scarecrow at the end of the second "Snoopy in France" scene. Use the football to knock the helmet down from the tree, avoid the Red Baron while flying, and dodge the searchlights to reach the farmhouse.
He will be at his doghouse in Charlie Brown's backyard. But only once you have gone to the pumpkin patch and completed the two tasks there, then given Pigpen the trick-or-treat bag, and given Linus the lemon sucker. Once you have the party invitation, you can go left into the yard.
Charlie Brown and Lucy play football as part of the third major sequence on Great Pumpkin Island. 1) Pumpkin Patch (right) - pick a pumpkin for Lucy, roll it to her house; give Pigpen the bag, and Linus the sucker. 2) Leaves (left) - have Snoopy gather leaves, then Linus jumps in them, loses his blanket, and mails his letter 3) Football (left again) - you need the pen from Linus's desk