There used to be a kind of art to April Fools' Day.
In 1977, for example, The Guardian famously concocted an island state named San Seriffe, which was essentially a series of puns dreamed up by its sub-editors.
The newspaper memorably received a number of angry letters...
So Pac-Man turned 30 last week, and ageing Googlers glommed onto the chance to reprise it in its title page. Which led to a renaissance of demand for the pill-popping ghost hunter, which has tempted Google to make the game permanently available.