The Color TV-Game 6 launched on June 1, 1977. It retailed at a price of ¥9,800, which was significantly lower than competing systems. Nintendo used this as a marketing tool. As its title implies, it contains six variations of "Pong", such as adding additional paddles, decreasing the size of the paddles, and adding deflective shields in the center of the screen. It could be powered by batteries or by a power adapter that was sold separately. Shortly after its release, Nintendo released an improved version of the TV-Game 6, featuring a cream-white outer casing and removing the power adapter. A second variation was produced as part of a promotion with food company House Foods to promote their House Shanmen instant noodles. It is identical to the original TV-Game 6 but has the House Shanmen logo on the casing. This version was produced in very limited quantities, making it extremely rare. Sharp Electronics produced dark orange-colored versions of the TV-Game 6 to bundle with their television sets.