| Date | User | Challenge | Score |
| SuperCat | Manyprime | 40 | |
| Mergen | Modes of Operation Starter | 15 | |
| Mergen | Bringing It All Together | 50 | |
| bleidd | Favourite byte | 20 | |
| Mergen | Diffusion through Permutation | 30 | |
| zyq | Common Ground | 75 | |
| Mergen | Confusion through Substitution | 25 | |
| chomcel | Legendre Symbol | 35 | |
| M0nR03 | Great Snakes | 3 | |
| Rares10 | You either know, XOR you don't | 30 | |
| OnlyJayden | Keyed Permutations | 5 | |
| develasmen | ASCII | 5 | |
| xseris | Bounded Noise | 50 | |
| hienthao123 | Curves and Logs | 40 | |
| Jefry2005 | ASCII | 5 | |
| M0nR03 | Finding Flags | 2 | |
| Mergen | Round Keys | 20 | |
| Mergen | Structure of AES | 15 | |
| develasmen | Great Snakes | 3 | |
| Mergen | Resisting Bruteforce | 10 | |
| bleidd | XOR Properties | 15 | |
| Mergen | Keyed Permutations | 5 | |
| Mergen | Modular Binomials | 80 | |
| 0xchris | Round Keys | 20 | |
| develasmen | Finding Flags | 2 | |
| doanhaphong | Lazy CBC | 60 | |
| yazenzinou | ASCII | 5 | |
| archivarius33 | Modular Inverting | 25 | |
| OsujiWesley | No Difference | 175 | |
| OsujiWesley | PriMeD5 | 100 | |
| Rares10 | Favourite byte | 20 | |
| OsujiWesley | Hash Stuffing | 50 | |
| chomcel | Quadratic Residues | 25 | |
| maquuu1809 | Static Client | 100 | |
| Mergen | Adrien's Signs | 80 | |
| kuidas_kui | Passwords as Keys | 50 | |
| OsujiWesley | Collider | 50 | |
| archivarius33 | Modular Arithmetic 2 | 20 | |
| bleidd | XOR Starter | 10 | |
| xseris | Noise Free | 40 | |
| 0xchris | Structure of AES | 15 | |
| Rares10 | XOR Properties | 15 | |
| Emil_Zawislak | Roll your Own | 125 | |
| Mergen | Chinese Remainder Theorem | 40 | |
| AmateurCoder08 | Modular Inverting | 25 | |
| bleidd | Bytes and Big Integers | 10 | |
| Mergen | Modular Square Root | 35 | |
| doanhaphong | Flipping Cookie | 60 | |
| yazenzinou | Great Snakes | 3 | |
| hienthao123 | Scalar Multiplication | 35 |
You are now level Current level