Does the Xbox still make sense in a mobile gaming world?

Microsoft pulled out all the stops this week -- flashing lights, pounding music, fake smoke -- to debut its new $500 game console, aimed at the kind of hard-core gamer who appreciates a good glamour shot of a microprocessor. But how many will actually buy it? That's the question looming around Microsoft's launch, as the technology giant touts its most powerful console ever to an audience that increasingly is becoming more casual. Mobile games now make up 42 percent of the game industry's revenue worldwide, according to a report from game industry analysis firm Newzoo. It is expected to pass the 50 percent mark by 2020.