| Date | User | Challenge | Score |
| BADWARE | XOR Starter | 10 | |
| Juha | Bytes and Big Integers | 10 | |
| Aryaethn | Special Soundness | 25 | |
| brew | Script Kiddie | 70 | |
| ShahnewasAhmed | Base64 | 10 | |
| Juha | Base64 | 10 | |
| ShahnewasAhmed | Hex | 5 | |
| aizz | Favourite byte | 20 | |
| starnotes | Extended GCD | 20 | |
| Juha | Hex | 5 | |
| ShahnewasAhmed | ASCII | 5 | |
| aizz | XOR Properties | 15 | |
| ShahnewasAhmed | Great Snakes | 3 | |
| ShahnewasAhmed | Finding Flags | 2 | |
| Juha | ASCII | 5 | |
| Juha | Great Snakes | 3 | |
| starnotes | Greatest Common Divisor | 15 | |
| aizz | XOR Starter | 10 | |
| vr7xl | Chinese Remainder Theorem | 40 | |
| starnotes | You either know, XOR you don't | 30 | |
| YWzhong | CTRIME | 70 | |
| Juha | Finding Flags | 2 | |
| aizz | Bytes and Big Integers | 10 | |
| starnotes | Favourite byte | 20 | |
| aizz | Base64 | 10 | |
| ra1 | Finding Flags | 2 | |
| brew | Lazy CBC | 60 | |
| starnotes | XOR Properties | 15 | |
| RIFTTT | Finding Flags | 2 | |
| aizz | Hex | 5 | |
| aizz | ASCII | 5 | |
| starnotes | XOR Starter | 10 | |
| vr7xl | Modular Square Root | 35 | |
| Htet | Null or Never | 100 | |
| aizz | Great Snakes | 3 | |
| BADWARE | Bytes and Big Integers | 10 | |
| starnotes | Bytes and Big Integers | 10 | |
| aizz | Finding Flags | 2 | |
| Sah | CERTainly not | 30 | |
| starnotes | Base64 | 10 | |
| cccaowl | Hex | 5 | |
| starnotes | Hex | 5 | |
| BADWARE | Base64 | 10 | |
| BADWARE | Hex | 5 | |
| BADWARE | ASCII | 5 | |
| starnotes | ASCII | 5 | |
| cccaowl | ASCII | 5 | |
| starnotes | Great Snakes | 3 | |
| starnotes | Finding Flags | 2 | |
| BADWARE | Great Snakes | 3 |
You are now level Current level