Correctly type the word that appears under the approaching enemy to defeat them. Type successive words correctly in order to gain a multiplier. If an enemy gets too close, they’ll start shooting at you and taking off your health. If you run out of health, it’s game over. Collect powerups to replenish your health, increase your multiplier, or defeat the oncoming enemies more easily. Some of them have a temporary lasting effect, and will eventually run out. Watch the meter on the lower-left of the screen to see how much time is left on powerups.