Phy-Stack is an interesting physics based entertainment game to kill your time.
How to play:
1) Each game level consists of one or more platforms in GREEN color.
2) You will be provided with several shapes with RED color.
3) You can tap to get each of those shapes.
4) Use your logic and strategic skills to place the RED bodies over the GREEN platform(s).
5) Balance all shapes until count down ends, and win each level.
6) The faster you win, you can collect more stars.
Play and finish all levels with full stars... :)