Konami knocks it out of the park yet again with one of the greatest arcade conversions ever to hit the NES: Cooperative platform shooter Contra. It's a rare example of a coin-op title being ported faithfully to NES and somehow improving on the source material despite the move to inferior hardware. With its tight level design, inventive bosses, impressive weapons, and slightly combative cooperative gameplay, Contra is a true NES classic that continues to be a great time more than 30 years later.