“Video game company sued because their graphics were not as good as promised.”

It sounds like a joke, but for some it is very serious business indeed.

A screenshot from the singleplayer campaign of Killzone: Shadow Fall.

When Sony’s PlayStation 4 launched late in 2013, Killzone: Shadow Fall was the star of its day-one games line-up. It is a stunningly good-looking game, certainly one of the most graphically advanced ever released, and it was also one of the first to take full advantage of big full-HD televisions.

At least, that was the plan. A lawsuit, filed in California by a legal firm with a history of chasing up video game companies for allegedly broken promises, alleges Sony misled the public over the game’s graphical capabilities.