A Pandemic bot.
I wrote a Scrabble bot that taught me a lot, was super fun to write, and frankly probably got me a few jobs. I'm terrible at Pandemic and though it'd be fun to write a bot for it.
This is GOFAI: none of that newfangled Deep Learning. Or not yet. Maybe after I get it to play enough games I can use it to generate data or something.
MAXIMIZE cure research
MINIMIZE outbreak potential
MINIMIZE outbreak damage