In 2003, after a long alliance with SSG, he split off to form his own game development company Infinite Interactive.
In 2007, Infinite Interactive put Puzzle Quest: Challenge of the Warlords on the market for the DS and PSP. It was a sleeper hit that received critical acclaim from gamers and game developers alike. Infinite Interactive has since ported Puzzle Quest to the Wii, Windows, Xbox 360, PS2, Mac, mobile, and iPhone.
In 2008, a Puzzle Quest spin-off game was developed on a number of platforms for D3 Publisher. Puzzle Quest: Galactrix was released on February 24, 2009. While critics praised the variety of the gameplay, it wasn't as well received as Puzzle Quest: Challenge of the Warlords. A full sequel to Puzzle Quest, Puzzle Quest 2, was released on June 22, 2010 and was seen as a return to form for the Puzzle Quest series.
Fawkner and Infinite Interactive licensed the game design to Boston-based Demiurge Studios to create Marvel Puzzle Quest: Dark Reign, while he worked on another project he called "Puzzle Quest and Warlords thrown together in a blender." Gems of War was released on November 20, 2014 and is still being supported with updates and events.