| Date | User | Challenge | Score |
| oithi | XOR Starter | 10 | |
| DraSoGo | Modular Inverting | 25 | |
| PatriciahMbua | Resisting Bruteforce | 10 | |
| Vinjr | No Difference | 175 | |
| x0Ph139 | Modular Arithmetic 1 | 20 | |
| melvin123_4 | Modes of Operation Starter | 15 | |
| DraSoGo | Modular Arithmetic 2 | 20 | |
| reksavertx | ASCII | 5 | |
| x0Ph139 | Extended GCD | 20 | |
| reksavertx | Great Snakes | 3 | |
| DraSoGo | Modular Arithmetic 1 | 20 | |
| reksavertx | Finding Flags | 2 | |
| DraSoGo | Extended GCD | 20 | |
| oneor | Chinese Remainder Theorem | 40 | |
| lydxn | Abelian SIDH | 90 | |
| gyul_ | Hex | 5 | |
| gyul_ | ASCII | 5 | |
| ippo717273 | Resisting Bruteforce | 10 | |
| CaniceMQ | Bean Counter | 60 | |
| CaniceMQ | Symmetry | 50 | |
| CaniceMQ | Flipping Cookie | 60 | |
| CaniceMQ | ECB CBC WTF | 55 | |
| CaniceMQ | ECB Oracle | 60 | |
| CaniceMQ | Passwords as Keys | 50 | |
| CaniceMQ | Modes of Operation Starter | 15 | |
| gyul_ | Great Snakes | 3 | |
| CaniceMQ | Bringing It All Together | 50 | |
| CaniceMQ | Diffusion through Permutation | 30 | |
| CaniceMQ | Confusion through Substitution | 25 | |
| CaniceMQ | Round Keys | 20 | |
| x0Ph139 | Greatest Common Divisor | 15 | |
| CaniceMQ | Structure of AES | 15 | |
| CaniceMQ | Resisting Bruteforce | 10 | |
| gyul_ | Finding Flags | 2 | |
| waffletech | Finding Flags | 2 | |
| CaniceMQ | Keyed Permutations | 5 | |
| Muriungife | Bean Counter | 60 | |
| Muriungife | Symmetry | 50 | |
| Muriungife | Flipping Cookie | 60 | |
| Muriungife | ECB CBC WTF | 55 | |
| hakka52 | Saying Hello | 20 | |
| lydxn | Better than Linear | 85 | |
| Kaela | Lazy CBC | 60 | |
| ippo717273 | Keyed Permutations | 5 | |
| Muriungife | ECB Oracle | 60 | |
| Muriungife | Passwords as Keys | 50 | |
| DraSoGo | Greatest Common Divisor | 15 | |
| lydxn | André Encoding | 80 | |
| yr81 | Missing Modulus | 80 | |
| OXTHE | XOR Starter | 10 |
You are now level Current level