N.B. foto
| Challenge | Status | End | Votes | Entries | Players |
|---|---|---|---|---|---|
| Architecture & People | closed | 2 years, 5 months ago | 9000000 | 9146 | 4528 |
| Squares | closed | 2 years, 3 months ago | 8700000 | 7894 | 3936 |
| Our World in Layers | closed | 1 year, 11 months ago | 8000000 | 16059 | 4067 |
| Abstract Architecture | closed | 1 year, 7 months ago | 7400000 | 6100 | 2997 |
| Industrialization | closed | 1 year ago | 7465748 | 4818 | 2361 |
| Still Life Splendor | closed | 8 months, 3 weeks ago | 10347797 | 9269 | 3032 |
| Your Legacy | closed | 6 months ago | 6550789 | 11202 | 2795 |
| Outdoor Furniture | closed | 3 months, 3 weeks ago | 10445522 | 9817 | 3242 |