Video gamers aren't just sitting on their couches anymore with glazed eyes glued to the television screen. More and more, they're gaming on mobile devices (though still probably sitting on their couches). Research from NPD Group shows that spending on physical game content dropped a precipitous 21% in 2012, but digital content spending rose 16%.

This has opened up new avenues for unlikely innovators such as chipmaker NVIDIA (NASDAQ:NVDA) and accessories maker ZAGG (NASDAQ:ZAGG). Our Motley Fool road warrior Rex Moore explains more in the video below.

Rex Moore owns shares of Microsoft. The Motley Fool recommends Google and NVIDIA. The Motley Fool owns shares of Google and Microsoft. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.