If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
A very violent shooter game where you shoot little white men that do not harm anybody. Besides, if you chose the second or the third weapon, you will not only kill them, but will blow them to pieces painting the wall with their blood. Not recommended for children!
Mouse - Aim / Shoot.
1-3 - Select Weapon.