You would like the T3X language as an exercise to port stuff from Free Pascal too it. In a near future I plan to port two libre text adventures with it, Beyond the Titanic and Supernova. If it fits under T3X, it might run in 'high end' CP/M systems out there.

https://t3x.org/t3x/0/index.html

https://t3x.org/t3x/0/t3xref.html

Beyond these Curses simple games, there's a 6502 assembler and disassembler among a Kim-1 simulator, Micro Common Lisps and whatnot.