| Date | User | Challenge | Score |
| Kiyowa | Bytes and Big Integers | 10 | |
| creativearun005 | Passwords as Keys | 50 | |
| creativearun005 | Modes of Operation Starter | 15 | |
| R3 | Salty | 20 | |
| Kiyowa | Base64 | 10 | |
| h4zylune | Hex | 5 | |
| Kiyowa | Hex | 5 | |
| funkytori | The j-invariant | 20 | |
| tianyuan | ECB Oracle | 60 | |
| Kiyowa | ASCII | 5 | |
| Kiyowa | Great Snakes | 3 | |
| Thorbeam | Special Soundness | 25 | |
| NoBirdWasHam | Blinding Light | 120 | |
| funkytori | Introduction to Isogenies | 10 | |
| Kiyowa | Finding Flags | 2 | |
| R3 | Manyprime | 40 | |
| tianyuan | Passwords as Keys | 50 | |
| rkdjason | Common Ground | 75 | |
| 3l3ktr1c_f4n | You either know, XOR you don't | 30 | |
| Thorbeam | Proofs of Knowledge | 20 | |
| funkytori | Smooth Criminal | 60 | |
| n0qword | You either know, XOR you don't | 30 | |
| 3l3ktr1c_f4n | Favourite byte | 20 | |
| Kruvix | Great Snakes | 3 | |
| ytle | Diffusion through Permutation | 30 | |
| n0qword | Favourite byte | 20 | |
| Kruvix | Finding Flags | 2 | |
| 3l3ktr1c_f4n | XOR Properties | 15 | |
| Insp3ct0r | Great Snakes | 3 | |
| Insp3ct0r | Finding Flags | 2 | |
| ytle | Confusion through Substitution | 25 | |
| Kirwa | Great Snakes | 3 | |
| Kirwa | Finding Flags | 2 | |
| n0qword | XOR Properties | 15 | |
| 3l3ktr1c_f4n | XOR Starter | 10 | |
| SakurakouziAsaka | XOR Properties | 15 | |
| 3l3ktr1c_f4n | Bytes and Big Integers | 10 | |
| ytle | Round Keys | 20 | |
| 3l3ktr1c_f4n | Base64 | 10 | |
| R3 | Square Eyes | 35 | |
| 3l3ktr1c_f4n | Hex | 5 | |
| 3l3ktr1c_f4n | ASCII | 5 | |
| 3l3ktr1c_f4n | Great Snakes | 3 | |
| 3l3ktr1c_f4n | Finding Flags | 2 | |
| ducbao_luke | Chinese Remainder Theorem | 40 | |
| lulu2233 | ASCII | 5 | |
| R3 | Monoprime | 30 | |
| alm | Roll your Own | 125 | |
| tdgdsxic | Base64 | 10 | |
| lulu2233 | Great Snakes | 3 |
You are now level Current level