There are several types of birds that are used in the game. At the level of the start, red bird are the only ones available. Each stage of the game, bird species will increase, some types of birds is more effective against certain materials or have special abilities which is activated after the bird is released. For example, a bird blue can split into three small yellow bird, a bird which can add speed and power is broken, Blackbird that could explode, and white bird that can drop bombs eggs, green bird that can be worked with Boomerang, and vermilion bird of large-sized bus destroyed more yng structure. Hog also appeared in different sizes. Little pigs relatively weak and easily destroyed by either firing directly or by debris from damaged buildings, the bigger pigs were able to defend ourselves from a lot of damage. Also, some pig wearing a steel helmet, making them more resistant to damage the structure.
A wide range of appreciation coming from various people after playing this game. If in Japan teachers use as a medium of learning physics. For artists of this game could be a good media for painting. For example Scooterek a Premium Member incDeviantart, which a Varied Artist, named the original Sylwia 20 years, Female and originates from Poland. Women born November 5, 1991. He had goals in order to become a better artist, to network with other artists and to show my artwork to the world. The characters mature and nice detail are the hallmarks of this image. The techniques used can combine colors with the atmosphere of the characters made into focus.
Picture Source: http://www.scooterek.deviantart.com/