| Date | User | Challenge | Score |
| PolyFluorine | Symmetry | 50 | |
| vitt | Hex | 5 | |
| sugawara | Network Attacks | 5 | |
| sugawara | Bean Counter | 60 | |
| heritage | Modular Inverting | 25 | |
| Gustavo_Adolfo | XOR Starter | 10 | |
| heritage | Modular Arithmetic 2 | 20 | |
| sandwhales | Modular Inverting | 25 | |
| nankhanhhh | Smooth Criminal | 60 | |
| tanaji | ASCII | 5 | |
| vitt | ASCII | 5 | |
| Steza | XOR Starter | 10 | |
| sandwhales | Modular Arithmetic 2 | 20 | |
| sugawara | Symmetry | 50 | |
| MohamedMujahed | Beatboxer | 150 | |
| tanaji | Great Snakes | 3 | |
| tigerBoss101 | CTRIME | 70 | |
| sandwhales | Modular Arithmetic 1 | 20 | |
| tanaji | Finding Flags | 2 | |
| hashiryo | Finding Flags | 2 | |
| MohamedMujahed | Forbidden Fruit | 150 | |
| sugawara | Flipping Cookie | 60 | |
| MohamedMujahed | Paper Plane | 120 | |
| PolyFluorine | No Leaks | 100 | |
| Zira | Salty | 20 | |
| vitt | Great Snakes | 3 | |
| ANGEL000001 | Privacy-Enhanced Mail? | 25 | |
| vitt | Finding Flags | 2 | |
| sugawara | ECB CBC WTF | 55 | |
| sugawara | ECB Oracle | 60 | |
| Zira | Manyprime | 40 | |
| PolyFluorine | Gotta Go Fast | 40 | |
| ANGEL000001 | Modular Inverting | 25 | |
| PolyFluorine | Flipping Cookie | 60 | |
| ANGEL000001 | Modular Arithmetic 2 | 20 | |
| c4e | Image Point Arithmetic | 30 | |
| ANGEL000001 | Modular Arithmetic 1 | 20 | |
| ANGEL000001 | Extended GCD | 20 | |
| chriceratops | Base64 | 10 | |
| kevin21 | ECB CBC WTF | 55 | |
| MohamedMujahed | The Good, The Pad, The Ugly | 100 | |
| chriceratops | Hex | 5 | |
| MohamedMujahed | Pad Thai | 80 | |
| ANGEL000001 | Greatest Common Divisor | 15 | |
| chriceratops | ASCII | 5 | |
| MohamedMujahed | Oh SNAP | 120 | |
| MohamedMujahed | Dancing Queen | 120 | |
| chriceratops | Great Snakes | 3 | |
| chriceratops | Finding Flags | 2 | |
| fulyscan | Bytes and Big Integers | 10 |
You are now level Current level