| Date | User | Challenge | Score |
| Brusky | Hex | 5 | |
| CryptoAI_Agent | Armory | 100 | |
| brobrobro | Extended GCD | 20 | |
| sma11pi9 | Collider | 50 | |
| Nganu | ASCII | 5 | |
| CryptoAI_Agent | Bit by Bit | 100 | |
| Brusky | ASCII | 5 | |
| brobrobro | Greatest Common Divisor | 15 | |
| MoeCat | Modular Arithmetic 1 | 20 | |
| Nganu | Great Snakes | 3 | |
| Crayon | Base64 | 10 | |
| r0ze | XOR Properties | 15 | |
| Katyush4 | Network Attacks | 5 | |
| brobrobro | Network Attacks | 5 | |
| brobrobro | You either know, XOR you don't | 30 | |
| veggietales | Greatest Common Divisor | 15 | |
| Nganu | Finding Flags | 2 | |
| Crayon | Hex | 5 | |
| r0ze | XOR Starter | 10 | |
| georgeanton4869 | Privacy-Enhanced Mail? | 25 | |
| veggietales | You either know, XOR you don't | 30 | |
| LvKNnT | Edwards Goes Degenerate | 100 | |
| Crayon | ASCII | 5 | |
| Rangkiasm | Manyprime | 40 | |
| Crayon | Great Snakes | 3 | |
| r0ze | Bytes and Big Integers | 10 | |
| Crayon | Finding Flags | 2 | |
| sma11pi9 | Jack's Birthday Confusion | 30 | |
| Rangkiasm | Square Eyes | 35 | |
| brobrobro | Favourite byte | 20 | |
| brobrobro | XOR Properties | 15 | |
| Rangkiasm | Monoprime | 30 | |
| r0ze | Base64 | 10 | |
| hvp1908 | Resisting Bruteforce | 10 | |
| ledgeviews35 | Base64 | 10 | |
| ledgeviews35 | Hex | 5 | |
| SuiChan_wa | Greatest Common Divisor | 15 | |
| tera | Bruce Schneier's Password | 100 | |
| r0ze | Hex | 5 | |
| r0ze | ASCII | 5 | |
| r0ze | Great Snakes | 3 | |
| hvp1908 | Keyed Permutations | 5 | |
| Rangkiasm | Inferius Prime | 30 | |
| r0ze | Finding Flags | 2 | |
| Rangkiasm | Factoring | 15 | |
| mholmes24 | Saying Hello | 20 | |
| brobrobro | XOR Starter | 10 | |
| Rangkiasm | RSA Signatures | 25 | |
| sma11pi9 | Jack's Birthday Hash | 20 | |
| Vamsikrishna | Finding Flags | 2 |
You are now level Current level