Don Mattrick, the former head of Xbox, reportedly proposed incorporating a real-money auction house into Halo 4, drawing a comparison to Diablo 3's ill-fated implementation. The anecdote comes from Dan Callan, a former staff designer at Bungie, who shared the story on Bluesky.

Callan recounted demoing a mission from Halo 4 when Mattrick suggested that the game's campaign could benefit from a "real money auction house for campaign mech skins." This idea mirrored Diablo 3's controversial real-money auction house, which significantly impacted the game and Blizzard's reputation at the time. According to Callan, those present reacted to the suggestion with a mixture of surprise and dismay, given that Diablo 3's experiment had already proven to be a significant failure and Halo 4 was reportedly 90% complete.

Halo 4 ultimately did not feature a real-money auction house. Mattrick departed from Microsoft and Xbox in 2013, the year after Halo 4's release. The details of how the development team dissuaded Mattrick from pursuing the auction house idea remain unclear.

This recollection surfaces as the gaming industry faces significant changes within Xbox, including the layoff of 3,200 employees and the restructuring of several studios. These recent events have led to studios like Double Fine and Compulsion Games becoming independent, while Undead Labs and Ninja Theory are under new ownership but retain their game properties. Bethesda studios, including ZeniMax Online and id Software, have also experienced substantial workforce reductions.