| Date | User | Challenge | Score |
| aj_2005x | Jack's Birthday Confusion | 30 | |
| aj_2005x | Jack's Birthday Hash | 20 | |
| dharneegan | Modular Inverting | 25 | |
| aj_2005x | The Matrix Revolutions | 125 | |
| aj_2005x | The Matrix Reloaded | 100 | |
| aj_2005x | The Matrix | 75 | |
| dharneegan | Modular Arithmetic 2 | 20 | |
| aj_2005x | Script Kiddie | 70 | |
| aj_2005x | Static Client 2 | 120 | |
| aj_2005x | Additive | 70 | |
| aj_2005x | Static Client | 100 | |
| aj_2005x | Export-grade | 100 | |
| aj_2005x | Parameter Injection | 60 | |
| aj_2005x | Deriving Symmetric Keys | 40 | |
| Molo | Quadratic Residues | 25 | |
| aj_2005x | Working with Fields | 10 | |
| aj_2005x | Let's Decrypt Again | 175 | |
| aj_2005x | Vote for Pedro | 150 | |
| Matthewng503 | Encoding Challenge | 40 | |
| Matthewng503 | Bytes and Big Integers | 10 | |
| exfearz | Bytes and Big Integers | 10 | |
| Matthewng503 | Base64 | 10 | |
| Matthewng503 | Network Attacks | 5 | |
| exfearz | Base64 | 10 | |
| exfearz | Hex | 5 | |
| ProfessorC | Base64 | 10 | |
| Molo | Modular Inverting | 25 | |
| wqcalc | Hex | 5 | |
| exfearz | ASCII | 5 | |
| exfearz | Great Snakes | 3 | |
| Behgod | ASCII | 5 | |
| ProfessorC | Hex | 5 | |
| exfearz | Finding Flags | 2 | |
| bartholomew | You either know, XOR you don't | 30 | |
| dhekejsjl | Modular Square Root | 35 | |
| Behgod | Great Snakes | 3 | |
| PescaruS | XOR Starter | 10 | |
| Matthewng503 | Hex | 5 | |
| naufalthariq18 | Favourite byte | 20 | |
| Matthewng503 | ASCII | 5 | |
| Matthewng503 | Great Snakes | 3 | |
| ProfessorC | ASCII | 5 | |
| Matthewng503 | Finding Flags | 2 | |
| naufalthariq18 | XOR Properties | 15 | |
| hani_harazi | Twin Keys | 100 | |
| 0xFFFFFF | Diffusion through Permutation | 30 | |
| hani_harazi | Let's Decrypt Again | 175 | |
| hani_harazi | Vote for Pedro | 150 | |
| hani_harazi | Blinding Light | 120 | |
| lololololokol | Bytes and Big Integers | 10 |
You are now level Current level