Original Idea and Authorship by TiramaSue on the old BFG Forum.  All data was collected by her up to the end of the March/April 2018 Castle Challenge.  Our thanks to her.

The 1st Challenge began earlier for PC than the other platforms.   It began around 7 hours before the start of the new Castle Day (meaning PC players only had a 7 hour 1st day).  All other platforms began on the next Castle Day.

1st Castle Challenge - Start Date:  June 20, 2016

 1.  Complete 5 Zoom Zones in 30 minutes.

 2.  Feed pets with 30 bags of food.

 3.  Pack 12 crates for Airships.

 4.  Get 1000 coins in 4 hours.

 5.  Beat Anabel at dice 3 times.

 6.  Complete 5 parts of Daily Quests.

 7.  Collect 50 morphing objects in 60 minutes.

 8.  Send 3 Airships.

 9.  Earn 600 coins by collecting morphing objects.

 10.  Get 1 diamond from the Wheel of Fortune.

 Reward - Vampiress avatar

 11.  Get 5 Plain Stamps.

 12.  Help friends 5 times.

 13.  Complete 10 Zoom Zones.

 14.  Get 5 Gold Chests from feeding pets.

 15.  Beat the Wise Dragon at dice 3 times.

 16.  Examine Hidden Object Scenes 20 times in 30 minutes.

 17.  Craft 15 items in 30 minutes.

 18.  Use 70 hints while examining Hidden Object Scenes.

 19.  Feed pets 8 times.

 20.  Get 3 Rare Stamps.

 Reward - Vampire avatar

 21.  Earn 2000 coins playing dice.

 22.  Get 5 Iron Chests from feeding pets.

 23.  Receive 300 Wheels for sending Airships.

 24.  Complete 5 Daily Quests.

 25.  Get 15 items from the Wheel of Fortune.

 26.  Examine Hidden Object Scenes 100 times.

 27.  Collect 200 Airship items.

 28.  Get 30 Pet Medallions in 24 hours.

 29.  Craft 10 items.

 30.  Get 5 Unusual Stamps.

 Reward - Centaur avatar

2nd Challenge - started Aug 4, 2016

 1. Examine hidden object scenes 20 times

 2. Use 20 items in zoom zones

 3. Earn 400 coins collecting morphs

 4. Feed pets 5 times

 5. Beat Lord Chamberlain at dice 3 times

 6. Get 5 Wooden Chests from feeding pets

 7. Help friends 5 times

 8. Complete 3 parts of daily quests

 9. Get 1 star from the fortune wheel

 10. Pack 9 crates for airships

 Reward Geisha Avatar

 11. Examine hidden object scenes 100 times

 12. Get 10 items from the fortune wheel

 13. Get 5 Unusual Stamps

 14. Craft 20 items

 15. Get 4000 coins in 4 hours

 16. Use 30 items in zoom zones

 17. Collect 100 airship items

 18. Earn 2000 coins playing dice

 19. Collect 200 morphing objects in 2 hours

 20. Get 50 pet medallions

 Reward Samurai Avatar

 21. Feed pets with 40 bags of food

 22. Send 6 airships

 23. Beat the Iron Knight at dice 3 times

 24. Complete 10 Zoom Zones

 25. Craft 10 items in 30 minutes

 26. Complete 10 parts of daily quests

 27. Receive 300 wheels for sending airships

 28. Use 100 hints while examining hidden object scenes

 29. Get 2 Unique Stamps

 30. Get 3 silver chests

 Reward: Mermaid Avatar

3rd Challenge - started Sep 12, 2016

 1 - Feed pets 5 times

 2 - Beat Innkeeper 'Salty' Took at dice 3 times

 3 - Examine hidden object scenes 20 times in 30 minutes

 4 - Earn 500 coins by sending airships

 5 - Get 15 items from the Fortune Wheel

 6 - Craft 20 items

 7 - Get 2 iron chests from feeding pets

 8 - Use 50 items in zoom zones in 24 hours

 9 - Collect 100 morphing objects

 10- Get 5 Rare Stamps

 earn Cowgirl Avatar

 11 - Pack 12 crates for airships

 12 - Use 50 hints while examining hidden object scenes

 13 - Complete 10 Zoom Zones in 30 minutes

 14 - Complete 5 parts of daily quests

 15 - Help friends 5 times

 16 - Earn 2000 coins playing dice

 17 - Get 10 Plain Stamps

 18 - Craft 15 items in 30 minutes

 19 - Get 1 diamond from the Fortune Wheel

 20 - Complete 7 parts of daily quests

 earn Cowboy Avatar

 21 - Examine hidden object scenes 80 times

 22 - Feed pets with 40 bags of food

 23 - Craft 15 items

 24 - Collect 50 airship items

 25 - Send 4 airships

 26 - Get 5 Gold Chests from feeding pets

 27 - Get 30 pet medallions in 24 hours

 28 - Beat Mountain Troll 'Rustle' at dice 3 times

 29 - Collect 200 morphing objects

 30 - Complete 4 parts of daily quests

 earn Count Incognito Avatar

4th Challenge: started Oct 22, 2016 and ran during the Fall Event (Halloween/Thanksgiving)

 1 - Get 7 of the Black Candy

 2 - Send 2 packed airships

 3 - Make 14 trades with Trick-or-Treaters

 4 - Open 20 zoom zones

 5 - Get 15 Pumpkins

 6 - Examine hidden object scenes 50 times

 7 - Help friends 5 times

 8 - Get 3 Gold Chests from feeding pets

 9 - Catch 5 Green Ghosts

 10 - Collect 100 airship items from hidden object scenes

 Avatar - Fortune Teller

 11 - Get 10 Ghost Traps

 12 - Get 15 of the Dreadful Ginger

 13 - Complete 2 Daily Quests

 14 - Catch 10 Red Ghosts

 15 - Collect 70 morphing pumpkins

 16 - Beat Anabel at dice 3 times

 17 - Use 50 items in zoom zones

 18 - Get 5 Unique Stamps

 19 - Get 30 of the Gummy Eyeballs

 20 - Get 3 Silver Chests from feeding pets

 Avatar - Fakir

 21 - Catch 15 Blue Ghosts

 22 - Get 1 star from the fortune wheel

 23 - Craft 20 items

 24 - Beat the Wise Dragon at dice 3 times

 25 - Help friends 10 times

 26 - Get 15 Ghost Traps

 27 - Receive 300 wheels for sending airships

 28 - Catch any 20 Ghosts

 29 - Complete 5 Daily Quests

 30 - Feed Pet 5 times

 Avatar - Madam Masquerade

5th Challenge: started Dec 16, 2016 and ran during the Winter Event (Christmas)

 1. Get 5 of the holiday wand

 2. Get 6 of the Christmas Lights

 3. Complete 3 Daily Quests

 4. Collect 5 Gold Globes

 5. Collect 100 morphing snowflakes

 6. Beat Lord Chamberlain at dice 3 times

 7. Use 30 items in zoom zones in 60 minutes

 8. Get 5 Rare Stamps

 9. Get 8 of the Festive Garland

 10. Get 3 Iron Chests from feeding pets

 Avatar - Hairy, Scary Bigfoot

 11. Collect 10 Silver Globes

 12. Earn 900 coins by sending airships

 13. Make 15 trades with children

 14. Get 10 of the Fir Cone

 15. Get 5 Snowflakes

 16. Craft 20 items

 17. Get 3 of the Santa Medallions

 18. Use 50 hints while examining hidden object scenes

 19. Collect 15 Bronze Globes

 20. Pack 12 crates for airships

 Avatar - Frosted Gingerbread Man

 21. Get 12 of the Christmas Star

 22. Get 8 items from the Fortune Wheel

 23. Make 10 trades with children

 24. Earn 1000 coins playing dice

 25. Get 5 of the Santa Medallions

 26. Get 8 of the Holiday Wand

 27. Collect 80 morphing snowflakes

 28. Collect any 30 snowglobes

 29. Complete 2 Daily Quests

 30. Feed pets with 15 bags of food

 Avatar - Christmas Angel

6th Challenge: started Apr 13, 2017 and ran during the Spring Event (Easter)

 1. Get 5 of the fireflower

 2. Complete 2 daily quests

 3. Use 50 hints while examining hidden object scenes

 4. Get 5 smiles

 5. Get 7 of the chocolate

 6. Collect any 10 Ladies enchanted eggs

 7. Examine Spring Terrace hidden object scenes 10 times

 8. Beat the Iron Knight at dice 3 times

 9. Send 3 packed airships

 10. Open 12 zoom zones

 Avatar - Cat Lover

 11. Craft 1 spring cake

 12. Get 5 of the snowdrop

 13. Get 10 carrots

 14. Get 4 gold chests from feeding pets

 15. Use 30 items in zoom zones

 16. Collect any 15 Creatures enchanted eggs

 17. Make 8 trades with the children

 18. Get 10 of the jelly candies

 19. Pack 12 crates for airships

 20. Complete 3 daily quests

 Avatar - dog lover

 21. Get 5 plain stamps

 22. Get 10 of the nuts

 23. Collect 150 morphing eggs

 24. Craft 15 items

 25. Make 15 trades with the children

 26. Feed Spring Event pets 3 times

 27. Beat Mountain Troll 'Rustle' at dice 5 times

 28. Collect any 20 Lords enchanted eggs

 29. Craft 3 of the wreath of spring

 30. Get 12 of the iris

 Avatar - Tiger Tamer

7th castle Challenge - started July 4, 2017

 This is almost the exact same Challenge as castle Challenge #1.  Only change from last year is task 9. Amount has been lowered from 600 to 450.

 1 Complete 5 Zoom Zones in 30 minutes

 2 Feed pets with 30 bags of food

 3 Pack 12 crates for airships

 4 Get 1000 coins in 4 hours

 5 Beat Anabel at dice 3 times

 6 Complete a 5 part Daily Quest

 7 Collect 50 morphing objects in 60 minutes

 8 Send 3 packed airships

 9 Earn 450 coins by collecting morphing objects

 10 Get 1 diamond from the Fortune Wheel

 Reward: Bunny Girl Avatar

 11 Get 5 Plain Stamps

 12 Help friends 5 times

 13 Complete 10 Zoom Zones

 14 Get 5 Gold Chests from feeding pets

 15 Beat the Wise Dragon at dice 3 times

 16 Examine hidden object scenes 20 times in 30 minutes

 17 Craft 15 items in 30 minutes

 18 Use 70 hints while examining hidden object scenes

 19 Feed pets 8 times

 20 Get 3 Rare Stamps

 Reward: Bunny Girl Avatar

 21 Earn 2000 coins playing dice

 22 Get 5 iron chests from feeding pets

 23 Receive 300 wheels for sending airships

 24 Complete 5 parts of daily quests

 25 Get 15 items from Fortune Wheel

 26 Examine hidden object scenes 100 times

 27 Collect 200 airship items from hidden object scenes

 28 Get 30 pet medallions in 24 hours

 29 Craft 10 items

 30 Get 5 Unusual Stamps

 Reward: Ginger Bunny Avatar

8th Castle Challenge - started Aug 20, 2017

 1) Use 20 items in zoom zones

 2) Send 2 packed airships

 3) Beat the Iron Knight at dice 3 times

 4) Examine hidden object scenes 50 times

 5) Complete 3 parts of daily quests

 6) Craft 15 items in 30 minutes

 7) Get 3 Wooden Chests from feeding pets

 8) Get 2 Unique Stamps

 9) Open 20 Zoom Zones

 10) Help friends 5 times

 Reward: Maid Joan Avatar

 11) Beat Lord Chamberlain at dice 3 times

 12) Examine hidden object scenes 20 times in 30 minutes

 13) Feed pets with 20 bags of food

 14) Collect 300 morphing objects

 15) Get 3000 coins in 4 hours

 16) Pack 9 crates for airships

 17) Craft 20 items

 18) Get 15 items from Fortune Wheel

 19) Get 5 Silver Chests from feeding pets

 20) Complete 7 parts of daily quests

 Reward: Ivanhoe Avatar

 21) Examine hidden object scenes 100 times

 22) Feed pets 5 times

 23) Open 7 Zoom Zones in 30 minutes

 24) Collect 50 airship items from hidden object scenes

 25) Get 1 star from the fortune wheel

 26) Use 100 hints while examining hidden object scenes

 27) Earn 500 coins from sending airships

 28) Get 5 Plain Stamps

 29) Use 50 items in Zoom Zones in 24 hours

 30) Earn 400 coins collecting morphs

 Reward: Merlin the Great Avatar

9th Challenge - start date Sep 25, 2017

 1) Examine hidden object scenes 20 times

 2) Use 20 items in zoom zones

 3) Earn 400 coins collecting morphs

 4) Feed pets 5 times

 5) Beat Mountain Troll 'Rustle' at dice 3 times

 6) Get 5 Iron Chests from feeding pets

 7) Help friends 5 times

 8) Complete 3 parts of daily quests

 9) Get 1 diamond from the fortune wheel

 10) Pack 9 crates for airships

 Avatar: Amazon

 11) Examine hidden object scenes 70 times

 12) Get 10 items from the fortune wheel

 13) Get 5 Unusual Stamps

 14) Craft 20 items

 15) Get 4000 coins in 4 hours

 16) Use 30 items in zoom zones

 17) Collect 100 airship items from hidden object scenes

 18) Earn 2000 coins playing dice

 19) Collect 200 morphing objects in 2 hours

 20) Get 40 pet medallions

 Avatar: Barbarian

 21) Feed pets with 40 bags of food

 22) Send 4 packed airships

 23) Beat Wise Dragon at dice 3 times

 24) Open 10 Zoom Zones

 25) Craft 10 items in 60 minutes

 26) Complete 10 parts of daily quests *****

 27) Receive 300 wheels for sending airships

 28) Use 50 hints while examining hidden object scenes

 29) Get 3 Rare Stamps

 30) Get 3 silver chests

 Avatar: Mowgli

 ***** The 26th task unlocked on the same day the Fall Event began, so players had to complete Fall Daily quests instead of the gnome daily quests.

10th Challenge - start date Oct 30, 2017

 1 Get 5 Ghost Traps

 2 Get 10 Pumpkins

 3 Catch 5 Yellow Ghosts

 4 Complete 2 Daily Quests

 5 Get 7 of the Toffee Apple

 6 Open 20 zoom zones

 7 Send 3 packed airships

 8 Catch 7 Blue Ghosts

 9 Craft 15 items in 30 minutes

 10 Make 10 trades with the children

 Avatar - Zena the Zombie

 11 Beat Innkeeper 'Salty' Took at dice 3 times

 12 Collect 150 morphing pumpkins

 13 Catch 10 Violet Ghosts

 14 Help friends 5 times

 15 Complete 3 Daily Quests

 16 Get 15 of the Orange Candy

 17 Feed pet 5 times

 18 Catch 12 Green Ghosts

 19 Get 15 items from Fortune Wheel

 20 Use 50 items in zoom zones

 Avatar - Baron Samedi

 21 Get 10 Ghost Traps

 22 Examine hidden object scenes 20 times in 30 minutes

 23 Catch 15 Azure Ghosts

 24 Get 5 Unusual Stamps

 25 Craft 20 items

 26 Make 15 trades with the children

 27 Get 3 gold chests from feeding pets

 28 Catch 17 Red Ghosts

 29 Collect 50 airship items from hidden object scenes

 30 Collect 70 morphing pumpkins in 60 minutes

 Avatar – Gorgon