Cocytus
Cocytus – an esolang where freezes after N accesses Malbolge was the first programming language I ever tried. Cocytus is my tribute to it (with engineering inside). It was named after 9th circle of Dante’s Hell, and its 4 zones are semantics, i.e in Judecca every memory address has an access budget and when it runs out, its freezes. Also the compiler is made in Cocytus and compiles itself until output is byte to byte identical across 3 stages. Generally useless in purpose. Happy to answer your questions!