UNITY FIELD AGENT
This is one of my favorite games, though I might be biased as involved as I was in the play-testing. The system is simple enough, but robust, and the card-activation system keeps you on your toes and offers interesting choices.This is one of those "warband" sort of games, like Frostgrave or Kill Team, where you can track XP and such if you want to. Or you can just work up a points-limit worth of figures and have a one-off game.