What's a grand iOS game to play when you're bored on a long train journey and need something that doesn't hog all your data?

Seriously, 'Good Pizza, Great Pizza' is the business! I stumbled upon it when I was on a ridiculously long train ride from Budapest to Prague and needed something to kill time that wouldn't completely rinse my data allowance. It's one of those games that's simple to pick up but surprisingly addictive. You're basically running a pizza shop, taking orders, and trying to keep your customers happy. Sounds simple, right? But trust me, it gets hectic in the best way possible! The best part is that it doesn't need constant internet, so it works a treat even when you're stuck in the middle of nowhere with dodgy signal. It's saved me on so many journeys now, from rural Thailand to the Scottish Highlands. Plus, it's a nice wee distraction when you're feeling a bit homesick.