Check out JogNog, a website that provides competitive learning games for students.
It is also available in the App Store for both Apple and Android devices.
JogNog boasts more than 40,000 test prep questions covering all content grades 2-12.
The Quick Quiz tool gives teachers free access to JogNog's library of 20,000 questions that address Common Core standards. Teachers, using this tool, can create a video game that supports their lesson plans and can take the place of a test and/or review materials.