| Date | User | Challenge | Score |
| wanttobethebest | Hash Stuffing | 50 | |
| 0xAnwar | Extended GCD | 20 | |
| Sasiskamalun | Modular Inverting | 25 | |
| k1ngk0ng | Monoprime | 30 | |
| k1ngk0ng | Factoring | 15 | |
| DeclinedMoth | XOR Starter | 10 | |
| porolishinan | Base64 | 10 | |
| Nadav160 | Marin's Secrets | 50 | |
| Z5 | Diffusion through Permutation | 30 | |
| baoan | No Way Back Home | 100 | |
| squ4r00t | Passwords as Keys | 50 | |
| 0xAnwar | Greatest Common Divisor | 15 | |
| rana24 | Square Eyes | 35 | |
| Kodyvim | Proofs of Knowledge | 20 | |
| kjs36202 | Modulus Inutilis | 50 | |
| porolishinan | Hex | 5 | |
| porolishinan | ASCII | 5 | |
| 0xAnwar | Lemur XOR | 40 | |
| PatrickL_SC | Logon Zero | 80 | |
| 0xAnwar | You either know, XOR you don't | 30 | |
| 0xAnwar | Favourite byte | 20 | |
| 0xAnwar | XOR Properties | 15 | |
| MoeCat | Base64 | 10 | |
| 0xAnwar | XOR Starter | 10 | |
| MoeCat | Hex | 5 | |
| MoeCat | ASCII | 5 | |
| Rodoro | Network Attacks | 5 | |
| MoeCat | Great Snakes | 3 | |
| Rodoro | Great Snakes | 3 | |
| MoeCat | Finding Flags | 2 | |
| Rodoro | Finding Flags | 2 | |
| Banana_Babanana | Additive | 70 | |
| eoin | Let's Decrypt | 80 | |
| mahu | Modular Inverting | 25 | |
| mahu | Modular Arithmetic 2 | 20 | |
| xth_student | Quadratic Residues | 25 | |
| mahu | Modular Arithmetic 1 | 20 | |
| Kinokoda | ECB Oracle | 60 | |
| AllGlobal | Hex | 5 | |
| Mr_Rocketman | Hex | 5 | |
| xth_student | Modular Inverting | 25 | |
| mahu | Extended GCD | 20 | |
| xth_student | Modular Arithmetic 2 | 20 | |
| Kinokoda | Modular Exponentiation | 10 | |
| wanttobethebest | Collider | 50 | |
| Mr_Rocketman | ASCII | 5 | |
| oslash | Salty | 20 | |
| KryVoid | ASCII | 5 | |
| Mr_Rocketman | Great Snakes | 3 | |
| KryVoid | Great Snakes | 3 |
You are now level Current level