This is a project I've been working on for the last couple of years (on and off - some work in early 2022, the rest in 2023). It's a hyper-casual game - pick a mystery image, and fill in the numbered squares with their matching colors. If you've seen something like Cross Stitch World on mobile devices, you get the idea.

DamPBN was created for PCs running MS-DOS with a 386 or higher, and uses VGA mode 13h for a full 256 colors (though images themselves are limited to a palette of 64 colors). The development environment is based on a much older version of DJGPP (using GCC 2.8), though it builds and runs fine on recent (GCC 9.x-based) DJGPP releases as well. I do all development in Visual Studio Code (because DOS-era text editors aren't very good) and build/test mainly in DOSBox-X, with occasional tests in 86Box and real hardware.

I also have a repo containing a number of other DOS related projects (https://github.com/Damaniel/dos_games), some of which I'll highlight in the future.