| Date | User | Challenge | Score |
| gchiu02 | Dancing Queen | 120 | |
| Ryanispop | The Good, The Pad, The Ugly | 100 | |
| Wuming0423 | You either know, XOR you don't | 30 | |
| Wuming0423 | Favourite byte | 20 | |
| iniM0n | Bean Counter | 60 | |
| Wuming0423 | XOR Properties | 15 | |
| iniM0n | Symmetry | 50 | |
| afmoroz | Token Appreciation | 5 | |
| Wuming0423 | XOR Starter | 10 | |
| Wuming0423 | Bytes and Big Integers | 10 | |
| Huyyeuthu2104 | CTRIME | 70 | |
| Asur0x | XOR Starter | 10 | |
| Orcinus | Finding Flags | 2 | |
| Asur0x | Bytes and Big Integers | 10 | |
| ghaisan | Modulus Inutilis | 50 | |
| Ryanispop | Oh SNAP | 120 | |
| Asur0x | Base64 | 10 | |
| Asur0x | Hex | 5 | |
| shewitt2 | XOR Starter | 10 | |
| Asur0x | ASCII | 5 | |
| capnolove | Quadratic Residues | 25 | |
| Wuming0423 | Base64 | 10 | |
| Asur0x | Great Snakes | 3 | |
| Wuming0423 | Hex | 5 | |
| Asur0x | Finding Flags | 2 | |
| Wuming0423 | ASCII | 5 | |
| ghaisan | Salty | 20 | |
| Wuming0423 | Great Snakes | 3 | |
| cryptohack720 | Background Reading | 5 | |
| shewitt2 | Bytes and Big Integers | 10 | |
| Alashmawy | XOR Starter | 10 | |
| Alashmawy | Bytes and Big Integers | 10 | |
| qwertyuiop11 | Great Snakes | 3 | |
| Incognito | Bringing It All Together | 50 | |
| Staroll | Chinese Remainder Theorem | 40 | |
| qwertyuiop11 | Finding Flags | 2 | |
| Mervatt | ASCII | 5 | |
| z4ns | Favourite byte | 20 | |
| Incognito | Diffusion through Permutation | 30 | |
| dolphinned | Bytes and Big Integers | 10 | |
| ggerod | Confusion through Substitution | 25 | |
| marcofireball84 | Working with Fields | 10 | |
| YGUY | Elliptic Nodes | 150 | |
| Mervatt | Great Snakes | 3 | |
| nehir18 | ASCII | 5 | |
| z4ns | XOR Properties | 15 | |
| Mervatt | Finding Flags | 2 | |
| mimiele | Great Snakes | 3 | |
| marcofireball84 | Modulus Inutilis | 50 | |
| dolphinned | Base64 | 10 |
You are now level Current level