Click the button to begin playing. You can pause the game at any time with the same button. It will pause automatically if nothing happens for a while.
Four words will start floating about and you will hear one of them. Click on the word you heard. You can listen again to the last word by clicking the replay button.
When the chosen word passes near the monster, the monster roars. If the monster sees the word three times, it eats it up! If the monster annoys or distracts, you can put the monster to sleep by clicking the monster button on the left panel.
You can make the words (on average) easier or harder by changing the level. This can be done at any time including when the game is in progress.
You can make the words move faster or slower by altering the speed. This can be done at any time including when the game is in progress.