Well, in playing around with what I might be able to accomplish in Defold, I figured I'd start with a semi-known formula, and make a sort of "Choplifter" or "Airlift Rescue" type of game (for those old enough to know what those are...). A bunch of years ago I started a little music project with a few co-workers called "Her Majesty's Space Ship" (or HMSS for short), which was folky/bluesy/sometimes surfy music about a 10 year space war. Since it already had a fairly fleshed-out lore and characters, I figured it would be a fun place to start thematically for this game.
For the purposes of the Jam I'm hoping to finish ~3 missions, complete with story/dialogue and varying mission objectives in each. Rescue, recon, bombing runs, escort missions, etc, etc.
At the moment I have basic mechanics for the main player ship, with weapon damage (both enemy- and friendly-fire included) for the ship and all actors (currently just infantry). Friendly people (civilian and military) can also be loaded and unloaded into the rear of the ship to be transported to/from safe locations to fulfill various mission objectives.
I'll hopefully update this topic as I make progress.
Please keep in mind that I am neither a programmer, an artist, nor a designer. IF the game starts to come together into something fun and playable, I have a real artist standing by to replace my "developer (used loosely) art (used very loosely)" with some much nicer stuff. Here's a little GIF. This is zoomed in to about 1/4 or so of the full screen area. Little people heavily inspired by original C&C...