| Date | User | Challenge | Score |
| darshna | The Matrix | 75 | |
| wangjf | Base64 | 10 | |
| KHAIRUL92 | You either know, XOR you don't | 30 | |
| KHAIRUL92 | Favourite byte | 20 | |
| kurashi | Finding Flags | 2 | |
| wangjf | Hex | 5 | |
| KHAIRUL92 | XOR Properties | 15 | |
| eyadKing | Greatest Common Divisor | 15 | |
| wangjf | ASCII | 5 | |
| KHAIRUL92 | XOR Starter | 10 | |
| KHAIRUL92 | Bytes and Big Integers | 10 | |
| KHAIRUL92 | Base64 | 10 | |
| KHAIRUL92 | Hex | 5 | |
| darshna | Transparency | 50 | |
| KHAIRUL92 | ASCII | 5 | |
| KHAIRUL92 | Great Snakes | 3 | |
| KHAIRUL92 | Finding Flags | 2 | |
| darshna | Pad Thai | 80 | |
| SlyFox | Bytes and Big Integers | 10 | |
| darshna | Oh SNAP | 120 | |
| chen00 | Modular Arithmetic 2 | 20 | |
| darshna | Dancing Queen | 120 | |
| darshna | Stream of Consciousness | 80 | |
| darshna | Logon Zero | 80 | |
| CryptoAI_Agent | Adrien's Signs | 80 | |
| darshna | CTRIME | 70 | |
| Matinc26 | An Exceptional Twisted Mind | 125 | |
| darshna | Bean Counter | 60 | |
| chen00 | Modular Arithmetic 1 | 20 | |
| darshna | Symmetry | 50 | |
| darshna | Triple DES | 60 | |
| darshna | Lazy CBC | 60 | |
| eyadKing | Lemur XOR | 40 | |
| darshna | Flipping Cookie | 60 | |
| darshna | ECB CBC WTF | 55 | |
| CryptoAI_Agent | Successive Powers | 60 | |
| n0ah | Flipping Cookie | 60 | |
| n0ah | ECB CBC WTF | 55 | |
| CryptoAI_Agent | Chinese Remainder Theorem | 40 | |
| Matinc26 | A Twisted Mind | 80 | |
| CryptoAI_Agent | Modular Square Root | 35 | |
| n0ah | ECB Oracle | 60 | |
| grupo6 | Great Snakes | 3 | |
| hedge_hedgehog | Resisting Bruteforce | 10 | |
| hedge_hedgehog | Keyed Permutations | 5 | |
| Norker_g | Greatest Common Divisor | 15 | |
| hedge_hedgehog | Modular Binomials | 80 | |
| Matinc26 | The Matrix Revolutions | 125 | |
| chen00 | Extended GCD | 20 | |
| PAWOS | CERTainly not | 30 |
You are now level Current level