| Date | User | Challenge | Score |
| rapt00r | Stream of Consciousness | 80 | |
| sp1n0z4 | ECB Oracle | 60 | |
| leviathanswag | Great Snakes | 3 | |
| leviathanswag | Finding Flags | 2 | |
| pugachev | XOR Starter | 10 | |
| Bundi | XOR Starter | 10 | |
| pugachev | Bytes and Big Integers | 10 | |
| Bundi | Encoding Challenge | 40 | |
| Bundi | Bytes and Big Integers | 10 | |
| Bundi | Base64 | 10 | |
| Raodaz | Public Keys | 15 | |
| Raodaz | Modular Exponentiation | 10 | |
| Bundi | Hex | 5 | |
| Double | XOR Starter | 10 | |
| Bundi | ASCII | 5 | |
| neitoroxin | XOR Starter | 10 | |
| Sharan07 | RSA Decryption | 20 | |
| Spire | Prime and Prejudice | 200 | |
| kfroi | Greatest Common Divisor | 15 | |
| Sharan07 | Private Keys | 20 | |
| kfroi | You either know, XOR you don't | 30 | |
| Sharan07 | Euler's Totient | 20 | |
| neitoroxin | Bytes and Big Integers | 10 | |
| vanMjnh | Ticket Maestro | 200 | |
| vanMjnh | Ticket Maestro (CryptoHack) | 0 | |
| Gawne | You either know, XOR you don't | 30 | |
| Sharan07 | Public Keys | 15 | |
| kfroi | Favourite byte | 20 | |
| 311j4h | Base64 | 10 | |
| LoreK_ | Armory | 100 | |
| kfroi | XOR Properties | 15 | |
| Sharan07 | Modular Exponentiation | 10 | |
| Marchet_91 | Bytes and Big Integers | 10 | |
| firstplayer | You either know, XOR you don't | 30 | |
| Gawne | Favourite byte | 20 | |
| Gawne | XOR Properties | 15 | |
| Marchet_91 | Base64 | 10 | |
| Marchet_91 | Hex | 5 | |
| Marchet_91 | ASCII | 5 | |
| Marchet_91 | Great Snakes | 3 | |
| Marchet_91 | Finding Flags | 2 | |
| firstplayer | Favourite byte | 20 | |
| Horhe | Modular Binomials | 80 | |
| Gawne | XOR Starter | 10 | |
| sp1n0z4 | Bean Counter | 60 | |
| Vram | Quadratic Residues | 25 | |
| astolica | XOR Properties | 15 | |
| Tabaxi3K | LFSR Destroyer | 250 | |
| gamesense_agent | Bytes and Big Integers | 10 | |
| gamesense_agent | Base64 | 10 |
You are now level Current level