Play Shadow Complex for free
It appears that there is a glitch in the free trial of the newly released "Shadow Complex" on the XBLA that allows you to play the full game without paying for it.

You will have to complete the game in one sitting, and to be honest, it is a fantastic game that is well worth the money anyway, but if you want an extended free trial, this is ideal.

Instructions on how to perform the glitch in the article.