Frozen Synapse (2011)

Plot movement, facing and pauses for a small squad, test a possible enemy response, then press Prime to resolve both sides together. The usual five-second burst is short enough to make a doorway or a delayed crossing worth studying closely. A simulation tests your assumptions; it does not reveal the opponent's actual orders. Begin with the solo campaign and skirmish generator while learning sightlines and weapon match-ups. Its unhurried planning is a good fit for a chess-club discussion about why one plausible plan defeats another.