My post–high school Advanced Dungeons and Dragons group had a running joke—OK, we had about 600 running jokes, but one of them was that for any given encounter situation, there were always a plan A and a plan B. Plan A was “Get ’em!” Plan B was “Run!”
Fifth-edition D&D, with its inclusion of opportunity attacks, has made it curiously challenging to execute plan B.
This isn’t a brand-new concept. It existed in D&D version 3.5 and fourth edition, and many other tactical games, both tabletop and computer, incorporate opportunity attacks. But because of the turn-based nature of these games, a combatant who wants to retreat is confronted with a difficult and unpleasant choice: If the combatant uses his or her action to Disengage, then uses his or her full movement speed to retreat, the opponent can use its full movement speed to close the distance again, then use its action to Attack. But if the combatant uses his or her action to Dash, he or she risks getting struck by an opportunity attack upon leaving the opponent’s zone of control.