What's a good iOS game for when you're properly bored on a long-haul flight and need something engaging, but not too data-heavy?

Honestly, Palmon: Survival has been an absolute godsend on those ridiculously long flights. You know the ones – Dublin to, say, Bangkok. It's grand because you can really get stuck into building your little world, and it's not one of those games that's constantly trying to get you to buy stuff. Plus, it works a treat offline! I downloaded a bunch of new content before my last trip, and it kept me entertained for hours. I've played it everywhere, from dodgy buses in Peru to fancy airport lounges in Dubai, and it always sorts me out when I'm bored. And the best part? It doesn't hammer your data when you're back online. Roaming charges are the bane of a nomad's existence!