| Date | User | Challenge | Score |
| quanta_root | XOR Starter | 10 | |
| imperishA | Bytes and Big Integers | 10 | |
| s1ntrix | XOR Properties | 15 | |
| quanta_root | Bytes and Big Integers | 10 | |
| javKer222 | Bytes and Big Integers | 10 | |
| NicoGrey | RSA Decryption | 20 | |
| hack_use_math | Vote for Pedro | 150 | |
| imperishA | Base64 | 10 | |
| quanta_root | Base64 | 10 | |
| NicoGrey | Private Keys | 20 | |
| javKer222 | Base64 | 10 | |
| amira_19 | Hex | 5 | |
| InTime | Lazy CBC | 60 | |
| s1ntrix | XOR Starter | 10 | |
| imperishA | Hex | 5 | |
| amira_19 | ASCII | 5 | |
| NicoGrey | Euler's Totient | 20 | |
| imperishA | ASCII | 5 | |
| butcher | CTRIME | 70 | |
| imperishA | Great Snakes | 3 | |
| anr1st | XOR Properties | 15 | |
| imperishA | Finding Flags | 2 | |
| Mahdiyar | Finding Flags | 2 | |
| amira_19 | Network Attacks | 5 | |
| Revelle1 | Moving Problems | 150 | |
| Revelle1 | ProSign 3 | 100 | |
| Revelle1 | Curveball | 100 | |
| Revelle1 | Smooth Criminal | 60 | |
| Revelle1 | Montgomery's Ladder | 40 | |
| Revelle1 | Efficient Exchange | 50 | |
| Revelle1 | Curves and Logs | 40 | |
| Revelle1 | Scalar Multiplication | 35 | |
| Revelle1 | Point Addition | 30 | |
| kurumi_ | Script Kiddie | 70 | |
| jumbo | Hex | 5 | |
| jaso | Great Snakes | 3 | |
| jaso | Finding Flags | 2 | |
| husnain123 | Modes of Operation Starter | 15 | |
| flrp | Finding Flags | 2 | |
| jumbo | ASCII | 5 | |
| denisamunteanu97 | Point Addition | 30 | |
| butcher | Dancing Queen | 120 | |
| s1ntrix | Bytes and Big Integers | 10 | |
| m0nc3f3 | Base64 | 10 | |
| s1ntrix | Base64 | 10 | |
| eloynm | Finding Flags | 2 | |
| Lord_Dexter | Modular Inverting | 25 | |
| husnain123 | Bringing It All Together | 50 | |
| s1ntrix | Hex | 5 | |
| m0nc3f3 | Hex | 5 |
You are now level Current level