Tower with spire

A simple game to build the highest possible tower.
The game has four modes. depending
from the choice, the tower can be affected by gravity
and the extra edges of each of the bricks can be cut off.

The goal of the game is to build the highest possible tower.
The tower is being built in three stages. By clicking with the left mouse button,
bricks at each stage. Right click set
A heavy brick that completes the stage. When to put heavy
brick player decides for himself. At the last stage, the spire is installed
which must last five seconds. Don't let the tower fall
at any of the stages or the exit of bricks from the construction zone.