In this, the second chapter of Clockwords, you continue to try to defend your secrets through a word powered cannon. Insects approach your safe, and your only defense is a cannon that shoots letters at the insects. The longer the word the more points and do more damage, and if you can use the special letters in the tanks you score even more points and damage, but reused words are worth 0 points.
Also if you download and install it, there are several mini-games that can be played in addition to adventure mode.
Finally, to use the most powerful letters, you have to buy the premium version.