I've recently been writing a play that is one big continuous scene, and I've wanted to read some other plays with this convention for inspiration. Some plays I know of are Blackbird, Fool For Love, and Two-Thirds Home.
I just finished a play titled "My Dinner with Gregor," a twist on the classic film "My Dinner with Andre." Like its inspiration, it is a conversation piece that takes place over the two characters' shared meal. PM me if you'd like to read- feedback is very welcome, especially from a fellow writer!
Somehow I've read all those plays and forgot to mention them when I was listing examples in my original post. Don't post while fighting a cold, friends.
I think you mean a play that runs real time. God Of Carnage is your best bet there. It also is a play with a single set which means it's totally naturalistic and actor controlled from start to finish.
I believe each of the 3 acts in The Ferryman are played out in real time, even though the show collectively takes place over 24 hours in the course of 3 hours.