What's a good iOS game for quick, silly battles when I'm on the go?

Bowmasters is an absolute godsend when I'm hopping between countries and need something to kill time. It's a proper silly game where you fling weapons at each other – sounds simple, but it's addictive! I love that it doesn't eat up your roaming data either, which is always a worry. It works a treat whether I'm waiting for a bus in Bangkok or chilling in a cafe in Berlin. Plus, there are loads of different characters and weapons to unlock, so it keeps things interesting. It's not exactly high art, but it's grand for a bit of mindless fun when you're travelling solo. The matches are quick, so you can get a game in while waiting for your coffee. It's sorted me out on more than one occasion!