Book with X

• x-men

  Real title: Marvel's X-Men comic series.

• Xmen

  Shorthand for Marvel's X-Men comic series.

• X men

  Variant of the real title X-Men comics.

• X files

  Short for The X-Files; many tie-in novels exist.

• xray

  As 'X-Ray' - Ray Davies's 1994 memoir.

• X marks the spot

  Real title used by several pirate kids' books.

• X-Files

  Yes - The X-Files tie-in novels from the TV series.

The words in the list Book with X come from players of the word game Categories game.