Since Flash games seem to grab so much attention here, and I’ve been doing little more than b*tching about the poor quality of games being tossed around this forum, it’s time to share…
A good middle-of-the-road challenge for the short attention spans here: The Way of the Ninja (wiki page)
You’ll have to download and install it, but it’s worth the trouble. This game is fast and furious, but terribly addicting.
Enjoy.