Cool, but I just get trapped in level 1 forever. Timer runs out but I'm stuck killing worms endlessly. Refreshed the page 3 times, same result each time. Guess I'll try on phone
the timer is just to decide whether you get a bonus for completing the level quickly.
I didn't even realize you could scroll the screen and the enemies had a base to defeat... whoops. Wasn't sure how the level was supposed to end