| Date | User | Challenge | Score |
| vdam | Greatest Common Divisor | 15 | |
| ox1bx | Ron was Wrong, Whit is Right | 90 | |
| Meganmatician | Bytes and Big Integers | 10 | |
| Adrinn | You either know, XOR you don't | 30 | |
| ox1bx | Bespoke Padding | 100 | |
| NayaliThal | Base64 | 10 | |
| NayaliThal | Hex | 5 | |
| ox1bx | Signing Server | 60 | |
| ox1bx | Let's Decrypt | 80 | |
| NayaliThal | ASCII | 5 | |
| NayaliThal | Great Snakes | 3 | |
| ox1bx | Blinding Light | 120 | |
| Tiwendat | XOR Properties | 15 | |
| NayaliThal | Finding Flags | 2 | |
| xccnnaino | Digestive | 60 | |
| sahanab07 | Hex | 5 | |
| Vansforever | Round Keys | 20 | |
| Vinjr | Couples | 100 | |
| sahanab07 | ASCII | 5 | |
| kilb100d | XOR Starter | 10 | |
| Adrinn | Favourite byte | 20 | |
| Tiwendat | XOR Starter | 10 | |
| sahanab07 | Great Snakes | 3 | |
| zzm | You either know, XOR you don't | 30 | |
| Adrinn | XOR Properties | 15 | |
| sahanab07 | Finding Flags | 2 | |
| ox1bx | Vote for Pedro | 150 | |
| Vansforever | Structure of AES | 15 | |
| Adrinn | XOR Starter | 10 | |
| maxtrap | XOR Starter | 10 | |
| samboso | Great Snakes | 3 | |
| pypy | Efficient Exchange | 50 | |
| Adrinn | Bytes and Big Integers | 10 | |
| maxtrap | Bytes and Big Integers | 10 | |
| Adrinn | Base64 | 10 | |
| Adrinn | Hex | 5 | |
| ox1bx | Cofactor Cofantasy | 150 | |
| Adrinn | ASCII | 5 | |
| ox1bx | Real Eisenstein | 150 | |
| maxtrap | Base64 | 10 | |
| Vansforever | Resisting Bruteforce | 10 | |
| Adrinn | Great Snakes | 3 | |
| Adrinn | Finding Flags | 2 | |
| maxtrap | Hex | 5 | |
| maxtrap | ASCII | 5 | |
| maxtrap | Great Snakes | 3 | |
| ZiggyNorton | Private Keys | 20 | |
| maxtrap | Finding Flags | 2 | |
| daethyra | XOR Starter | 10 | |
| pypy | Curves and Logs | 40 |
You are now level Current level