What's a grand little iOS game to keep me entertained on long train journeys across Europe, like when I'm hopping between cities?

Honestly, Word Trip has saved me on so many journeys! I downloaded it before a massive interrail trip across Europe, and it's been brilliant. It's one of those word puzzle games where you connect letters to make words, and it's surprisingly addictive. The best part? It works completely offline. I've used it everywhere from the Eurostar to a rickety train in rural Portugal, and it's always worked a treat. It's a lifesaver when you're trying to avoid using all your roaming data – doesn't eat up your data allowance at all. Plus, it's a good way to keep the mind ticking over when you're staring out the window for hours. I'd recommend it to any travel blogger who wants a bit of fun on their travels, especially if you're trying to keep the costs down!