Design Challenges Season 15 started May 6, 2022, and ended June 3, 2022. It is the 2nd season to not include old Contest of Mayor buildings. It is the 12th season to use the Blueprint Exchange reward format. It is the 6th season to have rewards depending on Design Challenge Leagues. It takes 4,500 blueprints to unlock all 3 buildings or 2,000 to unlock Musée du SimCity. This season includes 1 new limited time building and 2 returning limited time buildings. There were 7 challenges this season. They were Family Downtown, The Great Wilds, Tropical Haven, Sports City, City of History, Mountainside Grandeur, and Summer Holiday!
| Reward | Blueprints |
|---|---|
| Musée du SimCity | 2,000 |
| Central Train Station | 1,500 |
| Parliament Park | 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 |
Previous Season: Design Challenges Season 14
Next Season: Design Dash Season 5
Other Images[]
In-game mail announcing Design Challenges Season 15. (Part 1)
In-game mail announcing Design Challenges Season 15. (Part 2)
In-game mail reminding mayors about Design Challenges Season 15.
In-game mail announcing the end of Design Challenges Season 15.