It's not the Force. It's not Death Stars and X-Wings. It's not even Darth Vader.
The single greatest facet of the Star Wars saga, the one aspect guaranteed to unite adults and children in ad-libed choreography of "Vffffrrrrrrrvvvvvsss" and "Ktchtissssh", are lightsabers.
And now you can get one. Sort of.
The official Star Wars Facebook page has published a lightsaber tool allowing you to add a glowing blade to your profile picture in a manner similar to the eye-obscuring promotional posters released for The Force Awakens.
Simply head here and click the 'Try It' button. You can choose either a blue bladed lightsaber, or Kylo Ren's cross-hilted red lightsaber. Best pick a close-cropped photo of your face if you want the best effect.
If your Star Wars mania is likely to only last a week, there's an option to set how long the lightsaber 'filter' will appear for to the right of the image builder.
Here's hoping you won't have to delete it in a fit of Episode I-like rage in a few days time...