Speed Typing Game 作者： Nilesh Kumar

It's a simple speed typing game where you can select a difficulty level:
Easy- Each time you finish typing a word it adds five seconds to the clock.
Medium- Each time you finish typing a word it adds three seconds to the clock.
Hard- Each time you finish typing a word it adds two seconds to the clock.

You initially have 10 seconds to type as many words as possible to get more points before the time runs out.