Fifty-six percent of U.S. households own at least one current-generation video-game console, up from 50 percent a year ago.

Thirty-nine percent own at least one iPhone, iPad or iPod touch, up from 30 percent last year.

And 20 percent of U.S. households still own a PlayStation 2, a dozen years after that console’s release — beating out its successor, the PS3, which comes in at 18 percent.

Those are some of the more noteworthy numbers from a new Nielsen report on our changing video-game habits. The chart above comes from a webinar conducted by the firm’s researchers highlighting the data from the report.

The survey found that overall time spent on gaming increased 7 percent over the past year, driven by gains in gaming on the iPad and mobile phones, offsetting a decline in gaming on the Nintendo Wii.

Even with that decline in gaming time, the Wii still has the biggest presence among U.S. households, with 38 percent penetration, despite the rise of Microsoft’s Xbox 360, which comes in at 26 percent. The PS2’s number is a testament to its longtime popularity, and Sony’s struggle to repeat that success with the PS3 in the U.S.

In terms of video-game purchasing, the firm says that total spending on video games by “core buyers” was unchanged between 2010 and 2011, but digital content and subscriptions became a larger part of the mix, up 8 percentage points.

Nielsen’s numbers represent household penetration vs. actual usage or market share. For example, even though 93 percent of U.S. homes have PCs, not all of those computers are used as gaming machines. As another example, if two people in a house own Android devices, it’s counted as one Android household.

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