Your playing field divided into two parts: AIM blocks (left) and GUN blocks (right). Select any GUN block and either move it to trash bin (GUN double click and choose YES), or make a shot by clicking on AIM blocks field. Also, you can select any GUN block and then click trash bin field (below AIMs). You should break all AIM blocks with the help of GUN blocks to get victory. Note that green GUNs can break green AIMs only. The same for red. The frequency of new AIM row appearance depends on level difficulty: EASY, MEDIUM or HARD. So, you should prevent AIMs from reaching clouds, or you'll get defeat! Be attentive, your trash bin has limted capacity. Thash bin can be released by getting BONUSES, in turn BONUSES can be obtained when your GUN destroys 4 or more AIMs simultaneosly.