| Date | User | Challenge | Score |
| Diego120 | Modular Inverting | 25 | |
| Marwa_Ayman | Confusion through Substitution | 25 | |
| MatWoj99 | Modulus Inutilis | 50 | |
| brainr00t | Confusion through Substitution | 25 | |
| malgorzata_p | Collider | 50 | |
| radare | ECB Oracle | 60 | |
| brainr00t | Round Keys | 20 | |
| malgorzata_p | Jack's Birthday Confusion | 30 | |
| Arpitinhere | Private Keys | 20 | |
| malgorzata_p | Jack's Birthday Hash | 20 | |
| brainr00t | Structure of AES | 15 | |
| Adem0 | Collider | 50 | |
| Kicks299 | Base64 | 10 | |
| brainr00t | Resisting Bruteforce | 10 | |
| InsightRC | Favourite byte | 20 | |
| toliphye | Structure of AES | 15 | |
| brainr00t | Keyed Permutations | 5 | |
| nikiolga9 | Structure of AES | 15 | |
| fadziutto | Crossed Wires | 100 | |
| xsxwmhfaoywwqbfu | Great Snakes | 3 | |
| andreika47 | Extended GCD | 20 | |
| fadziutto | Everything is Big | 70 | |
| xsxwmhfaoywwqbfu | Finding Flags | 2 | |
| adanaboshnde | Bringing It All Together | 50 | |
| fadziutto | Modulus Inutilis | 50 | |
| nikiolga9 | Point Addition | 30 | |
| nikiolga9 | Point Negation | 10 | |
| MatWoj99 | Salty | 20 | |
| nikiolga9 | Background Reading | 5 | |
| Arpitinhere | Euler's Totient | 20 | |
| andreika47 | Greatest Common Divisor | 15 | |
| fadziutto | Salty | 20 | |
| MatWoj99 | Manyprime | 40 | |
| nikiolga9 | Salty | 20 | |
| Groucho | Base64 | 10 | |
| fadziutto | Manyprime | 40 | |
| Arpitinhere | Public Keys | 15 | |
| MatWoj99 | Square Eyes | 35 | |
| Pydx | XOR Starter | 10 | |
| nikiolga9 | RSA Signatures | 25 | |
| doublejue | Adrien's Signs | 80 | |
| MatWoj99 | Monoprime | 30 | |
| Marwa_Ayman | Round Keys | 20 | |
| MatWoj99 | Inferius Prime | 30 | |
| fadziutto | Square Eyes | 35 | |
| fadziutto | Monoprime | 30 | |
| InsightRC | XOR Properties | 15 | |
| nikiolga9 | Adrien's Signs | 80 | |
| andreika47 | You either know, XOR you don't | 30 | |
| fadziutto | Inferius Prime | 30 |
You are now level Current level