Improvements to my app http://TheWikiGame.com, making more "game types" like "Speed Race", "Least Clicks", "5 Clicks to Jesus", etc. After that, iPhone/Android apps for the game.
PS Have you ever thought about analyzing the wikipedia graph to make the game more interactive? (I study combinatorics.) I thought it would be fun to have the game give you feedback ("Warmer! Colder!") as you muddle through.
It's just me working on the game, part time right now, and it's the first game I've made.
So be one box that has: " click as few links as possible to get from "Banana" to "Britney Spears", as fast as you can!"
where Banana and Britney Spears are replaced with your actual words.
2) have a very clear "start" button. It's not clear without spending a few moments to understand to click the first term to start the game.
good luck. it's a cool game... another thing might be to show an example or some strategy tips. that might not should be on the first page though...