Video games are still a young medium in the grand scheme of things, but have been around for well over 50 years now. After the arcade boom in the 70s ... list with one-off systems no one purchased.

Although retro gaming has had a following ever since the first video game systems hit the market in the 70s, experts say the trend has boomed in recent years, and along with it the profits.

Individual games can cost $70 brand new and there are dozens released ... Originally known as the Atari Video Computer System ...

Now three priceless relics from gaming antiquity are going to auction: the world’s first video arcade game (Computer Space - 1971), the game it inspired (Pong - 1972) and the sequel to Pong ...