A math jeopardy game. Check it out here: http://projects.nullcreature.com/jprdy/index.html
The content is mostly placeholder, but you can add you own questions to a text file and change line 168 to load your file. Obiously that part's a work in progress.
The format of the text file is:
Question text goes here
(Category goes here in parens)
===
Option 1
*Option 2 w/ an asterisk to indicate it's the correct answer
`Option 3 in backticks to get rendered as a math expression`
`Option 4`
The standard board can hold 5 questions per category. Any number of questions beyond 5 in the text file get put into the next level, which is selectable at the bottom of the screen. I never really finished the level system.
Feel free to submit pull requests for question banks or anything else.