Defend House - from monsters

This game's goal is to defend house from monsters.
Here is a house which has a broad graden.
But monsters are comming near this house.
You need to prevent monsters from comming into this house.
There ia a soldier in front of this house.
You need to touch this soldier and drag backward.
Then a cross hair will appear in front of this soldier.
After put a cross hair to the wanted spot, untouch your finger then grenade will be fired to the spot.
Defeat comming monsters by calculating cross hair spot.
We must defend house.
Must defeat monsters to defend house!
Monsters will disappear and success to defend house.
Compare your score with other's in global leaderboard.