This year I'm entering the 2021 Finally Finish Something Jam (FFSJam). It's a great jam that focuses on finishing off existing projects, something which I could always use help with.
My entry will be a finished version of Splodey Boats 2000. I started work on this a couple of years ago, but I didn't get around to adding things like powerups or a working high score table. There's also some extra polish I want to add, and I'd like to tweak the levels so that it's fun from the start.
You can see WIP screenshots and statistics on the Splodey Boats 2000 updates page.