My student Elvis Alistar has developed a first version of his "Infinite Tower Defence" game, which aims to continuously creating personalized challenges in response to your playing style. The game is an application of experience-driven procedural content generation to tower defence games, a very popular yet relatively complex and cerebral genre of casual strategy games.
We are currently looking for playtesters. Please head over to http://itu.dk/people/elal/ and play a few rounds of the game, and then answer our questionnaire about it. Those who provide best feedback will be included in the credits for the game!