http://interactive-buddy.freeonlinegames.com/
This is SO FUN! Hurt a little spherical guy for money, which you can use to buy more items to hurt him even more. And if you get 400 dollars you can access the scripting engine, which, if you have a basic knowledge of programming, allows you to write your own scripts to make shtuff happen. I don't have a basic knowledge of programming. Huzzah. Fun anyway. Go play it.