Your comments

Very good game!!

This planet is grey. The trees are grey and leaves are grey too. There are a lot of grey cats here.
                                   ...

 It is called tragedy of squirrels.
 It is set  under the sea, in a jungle, in a shop, in the forest.
 I am trying to play very well.
 I play with my friends.
     ...

Croass the street at a traffic light when the light is green.
Don't distract by a mobile phone or MP3 player when crossing the road.
                       ...