| Date | User | Challenge | Score |
| ys512 | Keyed Permutations | 5 | |
| cityzen | Monoprime | 30 | |
| cityzen | Inferius Prime | 30 | |
| ys512 | Modular Binomials | 80 | |
| Riveroid | Hex | 5 | |
| phat1911 | Bytes and Big Integers | 10 | |
| bumbJrRaz | Finding Flags | 2 | |
| Riveroid | ASCII | 5 | |
| Riveroid | Great Snakes | 3 | |
| Ter3Sni | Background Reading | 5 | |
| Namunamu | The Matrix | 75 | |
| tzyelika | Network Attacks | 5 | |
| Riveroid | Finding Flags | 2 | |
| phat1911 | Base64 | 10 | |
| tzyelika | Great Snakes | 3 | |
| MarkMagallis | Transparency | 50 | |
| tzyelika | Finding Flags | 2 | |
| tympass | Greatest Common Divisor | 15 | |
| ys512 | Adrien's Signs | 80 | |
| tera_tekula | XOR Starter | 10 | |
| Senmai | Bytes and Big Integers | 10 | |
| nicki | Finding Flags | 2 | |
| FishHole | Greatest Common Divisor | 15 | |
| FishHole | Extended GCD | 20 | |
| 0sn4d | XOR Starter | 10 | |
| crow_or_raven | Great Snakes | 3 | |
| FishHole | Lemur XOR | 40 | |
| Senmai | Base64 | 10 | |
| crow_or_raven | Finding Flags | 2 | |
| ys512 | Chinese Remainder Theorem | 40 | |
| Senmai | Hex | 5 | |
| youssef_reda | Transparency | 50 | |
| 0sn4d | Bytes and Big Integers | 10 | |
| ChildHJesus | Base64 | 10 | |
| schoin | CTRIME | 70 | |
| Lincster9 | Finding Flags | 2 | |
| schoin | Triple DES | 60 | |
| schoin | Lazy CBC | 60 | |
| schoin | Export-grade | 100 | |
| gprendi | Modular Inverting | 25 | |
| exoq | ECB CBC WTF | 55 | |
| gprendi | Modular Arithmetic 2 | 20 | |
| takis848 | You either know, XOR you don't | 30 | |
| darkknight | You either know, XOR you don't | 30 | |
| schoin | Parameter Injection | 60 | |
| gprendi | Modular Arithmetic 1 | 20 | |
| lomarLopez | Finding Flags | 2 | |
| Senmai | ASCII | 5 | |
| cheepsss | Stream of Consciousness | 80 | |
| kqtiiv | ASCII | 5 |
You are now level Current level