Super Tank War

Here is Super Tank War, a pretty rare unlicensed Mega Drive (or Genesis if you're American) game by Gamtec. It's pretty much a Battle City clone, which is not an entirely surprising thing for them to have made, considering the popularity of Battle City and its hacks in Taiwan and other Famiclone-heavy markets, not to mention the fact that Gamtec had already made such a clone for the NES, variously known as either "King Tank" or "Super City Tank"