| Date | User | Challenge | Score |
| SupaFast | Keyed Permutations | 5 | |
| N0tPresl3y | Ticket Maestro | 200 | |
| jwc1686 | Modular Inverting | 25 | |
| MORF11 | Hex | 5 | |
| Hari542 | Extended GCD | 20 | |
| Ja4V8s28Ck | MD0 | 80 | |
| jwc1686 | Modular Arithmetic 2 | 20 | |
| Menad | Finding Flags | 2 | |
| horottotutto | Great Snakes | 3 | |
| MORF11 | ASCII | 5 | |
| MORF11 | Network Attacks | 5 | |
| horottotutto | Finding Flags | 2 | |
| MORF11 | Great Snakes | 3 | |
| SupaFast | Legendre Symbol | 35 | |
| MORF11 | Finding Flags | 2 | |
| emilyPractice | Base64 | 10 | |
| robertoCryp | Great Snakes | 3 | |
| emilyPractice | Hex | 5 | |
| MuhammadAhsan | ASCII | 5 | |
| ChMi | Modular Arithmetic 2 | 20 | |
| ryantech | Modular Inverting | 25 | |
| ryantech | Modular Arithmetic 2 | 20 | |
| jwc1686 | Modular Arithmetic 1 | 20 | |
| ryantech | Modular Arithmetic 1 | 20 | |
| istiyak1264 | Chinese Remainder Theorem | 40 | |
| SamHamMan7 | XOR Starter | 10 | |
| ThroughTheStream | Modular Inverting | 25 | |
| ryantech | Extended GCD | 20 | |
| ThroughTheStream | Modular Arithmetic 2 | 20 | |
| DhruvK9 | Hex | 5 | |
| SamHamMan7 | Bytes and Big Integers | 10 | |
| DhruvK9 | ASCII | 5 | |
| SamHamMan7 | Base64 | 10 | |
| SamHamMan7 | Hex | 5 | |
| DhruvK9 | Great Snakes | 3 | |
| ThroughTheStream | Modular Arithmetic 1 | 20 | |
| SamHamMan7 | ASCII | 5 | |
| ryantech | Greatest Common Divisor | 15 | |
| SamHamMan7 | Great Snakes | 3 | |
| ThroughTheStream | Extended GCD | 20 | |
| SamHamMan7 | Finding Flags | 2 | |
| DhruvK9 | Finding Flags | 2 | |
| ryantech | You either know, XOR you don't | 30 | |
| emr | Modular Inverting | 25 | |
| Kyle_0215 | Salty | 20 | |
| CryptoBro | Modular Arithmetic 1 | 20 | |
| rfmph | Modular Arithmetic 1 | 20 | |
| justsolveit | Favourite byte | 20 | |
| sduh | Finding Flags | 2 | |
| ryantech | Favourite byte | 20 |
You are now level Current level