I wrote my game entirely in my own custom engine (that I had to make at the start of the jam), using Python and SDL2.
It's a visual novel with a story taking place in 1900s wartime era:
https://novicearts.itch.io/memoirs-of-kaizer-academy
Please check it out if you have the chance. Source code is available upon downloading the game... I didnt have time to upload to github :(