BowMaster -- Flash Game

I was pretty sure that a BowMaster was one of those all-in-one exercise devices people have collecting dust in their garages, but I was wrong. It's actually a Flash video game wherein you have to defend your castle – apparently kings in video games spend a lot of money on castles and take it out of the personnel budget – against an endless army of mostly slow-moving soliders. The game starts simple, then incorporates a large number of different enemies, and different arrows to take them down.