What Plays did Shakespeare add a play?

These are all Shakeepeares Plays:

Antony and Cleopatra

Coriolanus

Hamlet

Julius Caesar

King Lear

Macbeth

Othello

Romeo and Juliet

Timon of Athens

Titus Andronicus

Henry IV, Part I

Henry IV, Part II

Henry V

Henry VI, Part I

Henry VI, Part II

Henry VI, Part III

Henry VIII

King John

Richard II

Richard III

All's Well That Ends Well

As You Like It

The Comedy of Errors

Cymbeline

Love's Labours Lost

Measure for Measure

The Merry Wives of Windsor

The Merchant of Venice

A Midsummer Night's Dream

Much Ado About Nothing

Pericles, Prince of Tyre

The Taming of the Shrew

The Tempest

Troilus and Cressida

Twelfth Night

Two Gentlemen of Verona

The Winter's Tale

but out of all of theese what plays did he include plays in I know there is a play in the play-a midsummers nights dream.What Plays did Shakespeare add a play?
Off the top of my head, there's one in Hamlet: "The play's the thing wherein I'll catch the conscience of the king".



And yes, the one you mentioned. Might be more, I admit I haven't read them in a long time.