Investors fear casual gamers will instead opt for tablet computers while hardcore players will wait for a new PlayStation or Xbox.

BBC: Nintendo Wii U games console to be released in November

The game, which is available on the PlayStation 3 and Xbox 360 consoles as well as Windows-based computers, launched two weeks before the SyFy series premier to give fans of the "Defiance" universe a taste of what was to come in the show.

CNN: 'Defiance' merges TV, video-gaming worlds

As well as being inside the PlayStation 3, the chip will also be used inside high-definition TVs and powerful computers.

BBC: The successor to the PlayStation 2 will be launched in 2006