At first, I wasn't sure what to do, but then I got it. You get the feeling of destroying enemies, as in other tower defense games, but it might have been too easy in this case :D. I just dumped everything positive into Ježik, and two of them destroyed everything in sight - which was fun, don't get me wrong, but not very challenging. I am also sorry for not playing the game with audio because the sound of the hot air balloon crashing down hurt my ears and I thought I was going crazy from the music :D