One popular type of challenge in many CTFs is the "jail challenge", which has players try to escape a code sandbox with some sort of restriction applied. jailCTF is a CTF with a large emphasis on jail challenges, with additional categories such as esolang (esoteric programming languages) and mainstream (js, ruby, bash, etc jail). These jail challenges may also incorporate "normal" CTF categories like cryptography, pwn, reverse engineering, and web as elements of the challenges. Even if you know nothing about jail challenges, we additionally have introductory challenges which can help anyone who is new to jail challenges become better at them! Come and play jailCTF!