Popular among graphic designers

The opponent takes this image, adds a new layer to create a whole new picture and returns it to their opponent.

In this way, the Tower of London can be transported to New Delhi then given a purple paint job.

This rally carries on with each player adding new layers, evolving the images until the match ends.

This is decided either by a time limit, a forfeit or mutual consent.

The matches are played live online at coudal.com, where the spectators can add comments in real time, and then vote for a winner.

Showing off

Photoshop tennis is more than just an interesting visual exercise.

It's a place to show off your design skills and display your wares in a competitive job market.

And because it uses images, not words, people from all over the world can join in whatever language they speak.

A typical Photoshop tennis match

New layers are added to the original image

The opposing side plays with the face, turning it into a negative

And the other player volleys back, taking the image further