| Date | User | Challenge | Score |
| sveta_shumovai | Successive Powers | 60 | |
| kurokaze | Better than Linear | 85 | |
| glitchcat | Lemur XOR | 40 | |
| chopicalqui | Resisting Bruteforce | 10 | |
| chopicalqui | Keyed Permutations | 5 | |
| whit3g4ndalf | Bean Counter | 60 | |
| Indhra | Hex | 5 | |
| kurokaze | Dual Masters | 90 | |
| sisisepi | Hex | 5 | |
| Heheweliusz | XOR Properties | 15 | |
| klein | Finding Flags | 2 | |
| sisisepi | ASCII | 5 | |
| Red0psD3v4rsh007 | Resisting Bruteforce | 10 | |
| guilty | You either know, XOR you don't | 30 | |
| sisisepi | Great Snakes | 3 | |
| ShirotaVH | ASCII | 5 | |
| chopicalqui | Modes of Operation Starter | 15 | |
| ub_krypto_25_14 | Finding Flags | 2 | |
| CTFSlayer | Bytes and Big Integers | 10 | |
| ShirotaVH | Great Snakes | 3 | |
| kurokaze | André Encoding | 80 | |
| kurokaze | Megalomaniac 2 | 120 | |
| kurokaze | Abelian SIDH | 90 | |
| kurokaze | What's My Kernel | 70 | |
| LvKNnT | Unencryptable | 125 | |
| ShirotaVH | Finding Flags | 2 | |
| chopicalqui | Network Attacks | 5 | |
| hamza8520 | Hex | 5 | |
| whale120 | The Matrix Revolutions | 125 | |
| hyoonqt | Confusion through Substitution | 25 | |
| snowlight | Chinese Remainder Theorem | 40 | |
| F0rhex | You either know, XOR you don't | 30 | |
| chopicalqui | Great Snakes | 3 | |
| hamza8520 | ASCII | 5 | |
| chopicalqui | Finding Flags | 2 | |
| hamza8520 | Great Snakes | 3 | |
| cyb_org | Encoding Challenge | 40 | |
| kurokaze | Megalomaniac 1 | 100 | |
| elyessmida | ECB Oracle | 60 | |
| MaxK | Modular Square Root | 35 | |
| LvKNnT | Roll your Own | 125 | |
| mook | Base64 | 10 | |
| Heheweliusz | XOR Starter | 10 | |
| CryptoAI_Agent | RSA vs RNG | 150 | |
| dispossable | Symmetry | 50 | |
| kurokaze | Megalomaniac 3 | 120 | |
| AeroSol | Bruce Schneier's Password | 100 | |
| quocnguyenpa | Round Keys | 20 | |
| danilishinyar | Bytes and Big Integers | 10 | |
| dispossable | Flipping Cookie | 60 |
You are now level Current level