This is my first ever finished and released game - Puzzoid. It's a remake of the classic games Puzznic and Vexed. It contains 80 levels of various difficulty (and some of them can cause a serious panic attack ), and is available for Windows Phone, with plans to release for Android.
Trial version is available.
Link to the store: http://www.windowsphone.com/en-us/store/app/puzzoid/454fab9b-e7e4-43d1-b275-71f794d393c2