"A Classification of Audio-Based Games in terms of Sonic Gameplay and the introduction of the Audio-Role-Playing-Game: Kronos". Proceedings of the 7th Audio Mostly Conference: A Conference on Interaction with Sound. Corfu, Greece: ACM New York, NY, USA. pp. 160–164. doi:10.1145/2371456.2371483. ↑ Bop-it FAQ from World of Tim (personal website) ↑ BopIt Extreme rules and assembly instructions from World of Tim (personal website) ↑ http://www.playloopz.com/ Loopz's Official Website 1 2 Damoulakis, Ari (July 29, 2008).