@mrgroknroll You might want to check out #Troika
Troika is classless, but features Backgrounds which you can easily create yourself or expand to reinforce your setting. #Cairn might also be a good fit
@mrgroknroll My vote?
Wushu (https://danielbayn.com/wushu/).
Ridiculously fast, incredibly lean, and it inherently allows for as much over-the-top action (or as little) as you are inclined to have at your table, though it does lean toward the former.
If I were going to bust out a lightweight spelljammer game and I wanted a traditional GM/player dichotomy (of sorts), Wushu would be the game that immediately jumped to hand. It doesn't hurt that it's completely free along with all of its supplemental text.
Character sheets can fit on a 3x5 card with room to spare, so it really is good to go. Plus, it has a little more structure than Risus, which I find to be a bit more satisfying.