Encompassing everything from Halo to Sonic, big bands and beautiful voices lead this Top 10 countdown of some of the very best video game music covers YouTube currently has to offer.

"YouTube Video

This Saturn-era Sonic the Hedgehog never made it past this conceptual stage. Why? I'll let YouTube uploader AssemblerX explain.

"This is a video of the concept "nights" version of Sonic Xtreme for Sega Saturn. Looking to produce a concept for a 3D sonic, a Sega USA team either used or closely followed the design of "Nights" and caused problems internally at Sega. Thinking or knowing that the US team had used their engine, the Japanese nights team had a fit. The engine was ..."