This year, veteran video game developers Garry Kitchen and David Crane released a new game for the Atari 2600 – despite the fact that the console was discontinued some 30 years ago. Companies such as Limited Run Games and Strictly Limited Games are manufacturing brand new cartridges, and sometimes never-before-released games, for consoles that predate the smartphone. "The market's not remotely dead for these consoles," says Josh Fairhurst, head of North Carolina-based Limited Run. Prices for retro games have gone through the roof in recent years, as evidenced by a recent slew of record-breaking auction bids for classic titles, including the sale of a mint copy of Super Mario 64 for $1.5m (£1.1m). The supply of old games is limited, and demand is increasing: not just from older people who want to collect games they remember from their youth, but also from those who weren't even born when the Sega Mega Drive was cutting-edge.