What's a good iOS game for giving me the frights when I'm on a long train journey and the signal's dodgy?

So, I was on the train from Budapest to Prague, right? Signal kept cutting out, and I was bored stiff. I downloaded "The Ghost" before I left, thinking it might be a laugh. Turns out, it's an absolute godsend for spooky vibes! Even with the patchy signal, the single-player mode works a treat. The sound design is top-notch; I nearly jumped out of my skin a few times! Plus, when the signal's decent, the multiplayer is proper useful for some giggles with your travel buddies. It doesn't eat up your roaming data too badly either, which is always a bonus when you're galavanting around Europe. Definitely sorted my train journey, and gave me a few good scares to boot!