It's apparently a Dutch tradition for the person celebrating their birthday to be the one who provides the cake.
So, suitably enough, indie developer Joost van Dongen is celebrating his birthday today by giving instead of receiving, and has made his arty racing game Proun+ free on iPhone and iPad.
We called this "a wonderfully put together game that manages to take the best elements of two genres and squish them together into a cohesive whole" in our enthusiastic Gold Award review.
Get the game for nothing, here. After today, Proun+ will be available for a week at the special price of 79p / 99c for those who have missed the party. After that, it's back up to £2.99 / $3.99.