GameStop Corp., the go-to retailer for video game consoles and accessories, recently trumped Sycamore Partners' Hot Topic to buy Geeknet, the parent company of online shopping hub ThinkGeek. The deal allows GameStop to broaden its appeal beyond games. Hot Topic runs the gamut of pop-culture themed items, from comics and toys to gadgets and apparel. GameStop is just one of many big names in the video game sector wielding M&A. Heres a look at recent deal activity.