The Journey developer will be able to do so thanks to a $5.5 million (£3.53 million) investment from venture capital firm Benchmark Capital.
As part of the deal, Mitch Lasky from the firm will join thatgamecompany's board of directors, having previously worked for Activision and EA Mobile.
"We believe fundamentally in TGC's vision for interactive entertainment: to bring to games a little of what Pixar films brought to animation - emotional depth, engagement with fully realised worlds, and a strong sense of authorship," Lasky said in a blog post.
"In the modern, hyper-connected games market, we believe TGC can reach the broadest possible audience if that vision can be fully controlled by the company. We're excited to be able to help to make that happen."
thatgamecompany had previously entered into a three-game contract with Sony to develop Flow, Flower and Journey exclusively for PlayStation 3.
The studio has said it wants its next game to reach a wider audience, and that it is exploring new platforms.
No details about the game or specific platforms have been announced, but thatgamecompany says that more will be revealed "soon" on its next title.
> Digital Spy reviews Journey
> Journey: Designing for Friendship - feature
Watch the trailer for Journey below: