Design Challenges Season 40 started May 31, 2024 and ended June 28, 2024. It is the 27th season to not include Contest of Mayor Season buildings. It is the 37th season to use the Blueprint Exchange reward format. It is the 31st season to have rewards depending on Design Challenge Leagues. It takes 4,500 blueprints to unlock all 3 buildings or 2,000 to unlock the Pink Hippo Park. This season included 1 new limited-time building, 1 returning limited-time building and 1 year-round building. There were 7 challenges this season. They are City of Bridges, City of History, The Great Wilds, Sports City, Family Downtown, Mountainside Grandeur, and City of Gardens.
| Reward | Blueprints |
|---|---|
| Pink Hippo Park | 2,000 |
| Colossal Sandcastle | 1,500 |
| Mountain Climbing Camp | 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 39
Next Season: Design Challenges Season 41
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