Design Challenges Season 20 started October 7, 2022, and ends November 3, 2022. It is the 7th season to not include Contest of Mayor Season buildings. It is the 17th season to use the Blueprint Exchange reward format. It is the 11th season to have rewards depending on Design Challenge Leagues. It takes 4,500 blueprints to unlock all 3 buildings or 2,000 to unlock Feathery Mansion. This season includes 1 new limited time building, 1 returning limited time building, and 1 year round building. There were 7 challenges this season. They were Hidden City, The Great Wilds, Beach City, Family Downtown, Falling Leaves City, Mountainside Grandeur and Spooky City .
| Reward | Blueprints |
|---|---|
| Feathery Mansion | 2,000 |
| Ruined Bell Tower | 1,500 |
| Spruce Forest | 1,000 |
| 3 Platinum Keys | 600 |
| 3 Golden Keys | 300 |
| 2 of each Expansion Item | 150 |
| 2 of each Beach Item | 250 |
| 2 of each Mountain Item | 250 |
| 5,000 Simoleons | 50 |
| 50 SimCash | 200 |
| 100 SimCash (Silver League) | 250 |
| 5,000 War Simoleons (Silver League) | 200 |
| 200 SimCash (Gold League) | 300 |
| 5 of each Storage Item (Gold League) | 400 |
| 5 of each Expansion Item (Platinum League) | 350 |
| 5 Golden Keys (Platinum League) | 500 |
Previous Season: Design Challenges Season 19
Next Season: Design Challenges Season 21