| Date | User | Challenge | Score |
| cloverpass | Symmetry | 50 | |
| GLucy | Keyed Permutations | 5 | |
| MohammadLeader | Base64 | 10 | |
| briankiks | Great Snakes | 3 | |
| itsvikram69 | Great Snakes | 3 | |
| R3C0N | Base64 | 10 | |
| briankiks | Finding Flags | 2 | |
| roogs22 | PriMeD5 | 100 | |
| R3C0N | Hex | 5 | |
| mk12 | Computing Shared Secrets | 30 | |
| R3C0N | ASCII | 5 | |
| cloverpass | Flipping Cookie | 60 | |
| R3C0N | Great Snakes | 3 | |
| Kryra | XOR Starter | 10 | |
| R3C0N | Finding Flags | 2 | |
| kuan6767 | Modular Inverting | 25 | |
| mk12 | Computing Public Values | 25 | |
| kuan6767 | Modular Arithmetic 2 | 20 | |
| kuan6767 | Modular Arithmetic 1 | 20 | |
| Kryra | Bytes and Big Integers | 10 | |
| kuan6767 | Extended GCD | 20 | |
| Kryra | Base64 | 10 | |
| Kryra | Hex | 5 | |
| Komze | You either know, XOR you don't | 30 | |
| Kryra | ASCII | 5 | |
| itsvikram69 | Finding Flags | 2 | |
| shuga | Finding Flags | 2 | |
| Kran | Crossed Wires | 100 | |
| 4fun | Modular Arithmetic 2 | 20 | |
| PhKhanh | Computing Public Values | 25 | |
| sid_crypto | Greatest Common Divisor | 15 | |
| Kryra | Great Snakes | 3 | |
| Kryra | Finding Flags | 2 | |
| sid_crypto | Base64 | 10 | |
| sid_crypto | Hex | 5 | |
| momolamorue | Parameter Injection | 60 | |
| Too | Adrien's Signs | 80 | |
| ti3plg | Public Keys | 15 | |
| ssjdlr | ASCII | 5 | |
| starnotes | LWE Intro | 10 | |
| Astorice | Resisting Bruteforce | 10 | |
| sid_crypto | ASCII | 5 | |
| Komze | Favourite byte | 20 | |
| Komze | XOR Properties | 15 | |
| Astorice | Keyed Permutations | 5 | |
| sp1n0z4 | Triple DES | 60 | |
| Too | Chinese Remainder Theorem | 40 | |
| Ankith_Abhayan | Noise Cheap | 90 | |
| starnotes | LWE Background | 5 | |
| yawanxuan | You either know, XOR you don't | 30 |
You are now level Current level