If you're a motorist in south west England, chances are you've probably encountered (or at least heard of) Swindon's Magic Roundabout. It's a monstrous concoction of five roundabouts smoshed together, and as far as I can see it serves no purpose other than to terrify bamboozled drivers up and down the country. I'm not kidding. In 2009 it was named the fourth scariest junction in Britain, after London's equally mega roundabout at Marble Arch, the M8 junctions in central Glasgow and Birmingham's Gravelly Hill, affectionately known as Spaghetti Junction.
It's the kind of nightmarish urban planning I try to avoid when building my own road networks in Mini Motorways, the excellent sequel to minimalist transport sim Mini Metro, but its new Challenge City update puts all four of these real-world asphalt atrocities to shame. In this new mode, each city gets a bunch of new rules and conditions you'll need to abide by, and after playing an early version of it this week, there's one challenge that's truly diabolical. Not only does it limit the number of road tiles at your disposal, but it does so in favour of, wait for it, unlimited roundabouts.