This is one of the best episodes, primarily due to the wonderful writing. Set on Halloween, the episode has the main characters dressing as their heroes, per Frasier's instruction, so that they might play an original game of his devising. Frasier's preconception of what they game will be like, when played, is nothing like it turns out to be. He foresees pompously meaningful tributes, rife with psychological insights, but what he gets is some down-to-earth portrayals of blue collar heroes and one superhero. Those who adopt accents in their portrayals do so with mixed success, adding to the humor.
Clever writing abounds. There are laugh out loud moments, touching moments, and poignant moments that turn on a dime to hilarious laughs. Much of the humor arises from the chosen costumes, but the dynamics of the Crane family set up some typical "Frasier" humor. Finally, there is an overriding bit about Old Man Crane that is genius.
It might seem that this episode was easy to write, but that is the sign of good writing: they make it look easy. It is mostly a one-set piece, adding further difficulty in devising a script.