after Stolar rescinded STI's access to Sonic Team's Nights into Dreams engine following an ultimatum by Nights programmer Yuji Naka. After programmer Ofer Alon quit and designers Chris Senn and Chris Coffin became ill, Sonic X-Treme was cancelled in early 1997. Sonic Team started work on an original 3D Sonic game for the Saturn, but development shifted to the Dreamcast and the game became Sonic Adventure. STI was disbanded in 1996 as a result of changes in management at Sega of America. Journalists and fans have speculated about the impact a completed X-treme might have had on the market. David Houghton of GamesRadar described the prospect of "a good 3D Sonic game" on the Saturn as "a 'What if...' situation on a par with the dinosaurs not becoming extinct". IGNs Travis Fahs called X-treme "the turning point not only for Sega's mascot and their 32-bit console, but for the entire company", but noted that the game served as "an empty vessel for Sega's ambitions and the hopes of their fans". Dave Zdyrko, who operated a prominent Saturn fan website during the system's lifespan, said: "I don't know if [X-treme] could've saved the Saturn, but ... Sonic helped make the Genesis and it made absolutely no sense why there wasn't a great new Sonic title ready at or near the launch of the [Saturn]." In a 2007 retrospective, producer Mike Wallis maintained that X-treme "definitely would have been competitive" with Nintendo's Super Mario 64. Next Generation reported in late 1996 that X-treme would have harmed Sega's reputation if it did not compare well to contemporary competition. Naka said he had been relieved by the cancellation, feeling that the game was not promising. Decline From 1993 to early 1996, although Sega's revenue declined as part of an industry-wide slowdown, the company retained control of 38% of the U.S. video game market (compared to Nintendo's 30% and Sony's 24%). Eight hundred thousand PlayStation units were sold in the U.S. by the end of 1995, compared to 400,000 Saturn units. In part due to an aggressive price war, the PlayStation outsold the Saturn by two to one in 1996, while Sega's 16-bit sales declined markedly. By the end of 1996, the PlayStation had sold 2.9 million units in the U.S., more than twice the 1.2 million Saturn units sold. The Christmas 1996 "Three Free" pack, which bundled the Saturn with Daytona USA, Virtua Fighter