I buy and play a ton of sub-$20 indie games these days, and a couple that have stuck out of the churn recently:
Balatro
see its own thread
Mortal Glory 2
Mortal Glory 2 on Steam
You manage a small gladiator company, with a maximum party size of 4. Combat phases are x-com light, played out on a small relatively bare arena map with a few obstacles & take about 5-10 minutes per fight, with about 30 fights (or random events/store nodes) per run, selected FTL branching map style.
Slice & Dice
Slice & Dice on Steam
Tactical dice-rolling roguelike. Take control of 5 heroes, each with their own unique dice. Fight your way through 20 levels of monsters and try to take on the final boss.