Michael Brough excels at designing systems that are simpler than they sound—better understood through exploration than explanation—and his grid-based games keep getting smaller and more complicated. In Imbroglio, his latest, your little dungeon-crawler has two health counters in the form of hearts and diamonds. Hearts are damaged by red monsters, diamonds by the blue ones, and you can do damage to their hearts or diamonds if you’re standing on a red or blue weapon tile respectively. In some of Brough’s previous work—like 868-HACK (2013) or Zaga-33 (2012)—you gain abilities by collecting them during play, but in Imbroglio, they all start…