Stefan Pelka
| Challenge | Status | End | Votes | Entries | Players |
|---|---|---|---|---|---|
| Special Collections | closed | 2 years, 9 months ago | 6000000 | 3312 | 3250 |
| Amazing Architecture | closed | 1 year, 9 months ago | 8800000 | 21272 | 5264 |
| Rusty Objects | closed | 4 months, 2 weeks ago | 9953637 | 9498 | 3135 |