Gravity命令是您可以免费播放的拍摄游戏之一。外星人正在入侵，地球前哨就是在路上。你可以在100波的过程中保护它吗？触摸屏幕以部署您的防御，将被销毁联系的任何内容。保护你的导弹筒仓，因为你需要每次射门，而且没有说不要让工人死！
Enable Flash in Chrome settings. When Flash is disabled, the label will read " Block sites from running Flash ".Click the toggle to enable flash and the label will read " Ask First ". Shown like the following:
Now Click And then,click " Allow " in the box that appears in the top-left to play the game.Shown like the following:
