From Halo to Braid: the 15 greatest Xbox games of all time

The Xbox brand is 15 years old today, so here are 15 of the most important titles from the original machine to the Xbox One era

It was 15 years ago this week that Microsoft launched its first foray into the console business. Arriving in the US on 15 November 2001, the original Xbox was designed to compete directly against Sony's all-consuming PlayStation 2. Offering a powerful graphics processor as well as a built-in hard drive and a dedicated online gaming service, it was basically a gaming PC wrestled into the chassis of games machine - thereby setting the architectural trend that would dominate the industry going forward.

Next came the Xbox 360, the dominant online multiplayer console of its era, introducing the idea of achievements and a gamer score mechanic that encouraged players to get the absolute most out of every title they purchased. And now we're in the Xbox One era, the industrial and architectural design decisions of that original machine still guiding Microsoft's approach to console development - albeit in a much more powerful form.