A docking station for connecting keyboards, microphones, cameras and other peripherals to the machine has also been revealed by developer PlayJam.
"It's hard to believe that we launched GameStick just a few short weeks ago. The Kickstarter campaign has been a roller coaster of a ride and one which has given us more feedback than we could ever have possibly imagined," said PlayJam's CMO Anthony Johnson.
"We have been able to take that input and literally better shape our product to give our backers a truly bespoke creation - one which has been designed by the Kickstarter community that backed it."
Changes to the HDMI stick console's design include a more ergonomic controller and a microSD slot in the device itself supporting up to 32GB additional storage space.
GameStick currently sits at more than 500% of its original Kickstarter target with over $500,000 raised to date. The system will be made available in four colours if the campaign reaches $560,000 by February 1.
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Watch a video on the GameStick below: