If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
In this game you need to move the missionaries and the cannibals to the opposite shore by using a boat. The boat cannot move by itself, and it cannot hold more than 2 passengers. When there are more cannibals than missionaries on one side, the cannibals will eat the missionaries!
This game is played by mouse only.