What's a good Android game for some proper robot-bashing fun when I'm on a long train journey through Europe?

Right, so I stumbled across Tear Them All: Robot fighting when I was on a ridiculously long train ride from Budapest to Berlin. Absolute godsend, it was! You basically build up your robot, upgrade it with all sorts of mad weapons, and then just go around smashing other robots. It's proper useful for stress relief, especially when the train WiFi is being a pain. The graphics are decent enough, and it doesn't eat up your roaming data, which is always a win when you're hopping around countries. It works a treat offline too, so you can keep bashing robots even when you're going through tunnels. I found it surprisingly addictive, and it kept me entertained for hours. Definitely worth a download if you're looking for some mindless, robot-smashing fun on the go.