Thunder Force 4 - Metal Squad (サンダーフォースIV) NES/FC 2a03 + Konami VRC7
I was blown away by this, I would never thought the VRC7 was up to this much capability as the genesis chip. It emulates the original (and its FM guitar riffs too!) very decently. BTW, the VRC7 was used in Konami's Lagrange Point (japan only). Cover by: Tappy (forgot the composer of the original.)