In AirMech, you play as a robot that transforms into a plane. You play from a top-down view. You can shoot stuff up, treating it like an arcade game, but it's a real-time strategy game.
You can watch the five-minute video here to listen to the game's creative director, James Green, explain AirMech while he plays it. Or, you could open up a browser in Chrome, go to the Chrome App Store, look for AirMech (it's here), add the game's app to your browser and start playing the alpha right now.
Your choice. Either way, enjoy!
AirMech is in public alpha on Chrome. It's also in a private alpha on PC. Green hopes to bring the game to consoles and maybe Vita as a downloadable game some time in the future, too.