What is the direct object in sentence Have you ever seen that play?

The direct object in the sentence "Have you ever seen that play?" is play.

Here's why:

* Direct objects are the nouns or pronouns that receive the action of the verb.

* The verb in this sentence is "seen".

* The sentence is asking if the listener has "seen" the "play".

Therefore, "play" is the direct object because it's the thing that is being seen.