| Date | User | Challenge | Score |
| handoko | Point Negation | 10 | |
| Loxeypuff | ASCII | 5 | |
| kldsaf23 | Great Snakes | 3 | |
| kldsaf23 | Finding Flags | 2 | |
| bobiealice | SSH Keys | 35 | |
| pypy | Euler's Totient | 20 | |
| h1gkpo | Favourite byte | 20 | |
| Ness2626 | Confusion through Substitution | 25 | |
| pypy | Public Keys | 15 | |
| pypy | Modular Exponentiation | 10 | |
| bobiealice | CERTainly not | 30 | |
| achoooo | You either know, XOR you don't | 30 | |
| mudassir | You either know, XOR you don't | 30 | |
| ItzFishyy | ASCII | 5 | |
| QRms | RSA vs RNG | 150 | |
| ameermouhammed | Favourite byte | 20 | |
| pypy | Bean Counter | 60 | |
| NipunRajput28 | Great Snakes | 3 | |
| rytui | You either know, XOR you don't | 30 | |
| NipunRajput28 | Finding Flags | 2 | |
| Cookies_ | Passwords as Keys | 50 | |
| RAVEN_031 | Micro Transmissions | 120 | |
| ameermouhammed | XOR Properties | 15 | |
| bobiealice | Privacy-Enhanced Mail? | 25 | |
| ItzFishyy | Great Snakes | 3 | |
| Loxeypuff | Great Snakes | 3 | |
| bobiealice | Modular Inverting | 25 | |
| bobiealice | Modular Arithmetic 2 | 20 | |
| Loxeypuff | Finding Flags | 2 | |
| bobiealice | Modular Arithmetic 1 | 20 | |
| phat1911 | Collider | 50 | |
| kimDokja | Hex | 5 | |
| Sherpearce | Adrien's Signs | 80 | |
| wiz1106 | Modular Inverting | 25 | |
| hanahiennguyen | Lazy CBC | 60 | |
| wiz1106 | Modular Arithmetic 2 | 20 | |
| CastorJr | Successive Powers | 60 | |
| Mai47 | Logon Zero | 80 | |
| wiz1106 | Modular Arithmetic 1 | 20 | |
| ameermouhammed | XOR Starter | 10 | |
| Cookies_ | Modes of Operation Starter | 15 | |
| MEGOhak | Bytes and Big Integers | 10 | |
| benzabonanza | You either know, XOR you don't | 30 | |
| wiz1106 | Extended GCD | 20 | |
| f1023n | You either know, XOR you don't | 30 | |
| ameermouhammed | Bytes and Big Integers | 10 | |
| achoooo | Favourite byte | 20 | |
| sveta_shumovai | Elliptic Nodes | 150 | |
| CyBeRXD | Finding Flags | 2 | |
| LtLightman | XOR Starter | 10 |
You are now level Current level