I saw someone recommending another game engine to be promoted on the jam description, what a nice idea. If that’s allowed then I’d like to recommend (please) also adding Ebiten to the list, it’s a dead simple 2D game library for Go.
Go’s not on the list either because it’s not yet a popular language for gamedev but adding it would give another choice, and one nice advantage of Ebiten is that it compiles to Windows, Mac, Linux and even Web (with much smaller WASM output than Unity). Lastly, it’s got more than 5k stars on Github (wink at Flame, mentioned in the other topic).
If you’re familiar with Go and want to try making a game in it, I’d recommend this library. If you’re new to programming, I think Go makes a good first language too, and Ebiten being so simple, a good choice for a first game.