I used to be a pretty avid PC gamer but as a father of six I tend to fill a support role in our household, which doesn't leave a lot of time for gaming. However, I live vicariously though my six, nine and eleven year old daughters who like PC games (especially Minecraft - I set up a LAN server for them), but they also spend a significant amount of time watching YouTube, playing Flash games on websites, and watching Netflix. We have a PS3 slim that gets a significant amount of use by my three year old daughter (Little Big Planet 2, predominantly), and a Nintendo Wii that's been mostly neglected (haha Nintendo). We also have a PS2 slim, and four vintage arcade cabinets (of the four, Soul Calibur III gets the most use).
The desktop computers are also primarily needed for school, and because three of our children need them for schoolwork each day, if one of them is down it causes a problem. When the desktop running Windows 7 (for game support) was compromised by a drive-by trojan, presumably from one of the flash game sights that are rather heavy on the advertising, I spent four days trying to repair it before throwing in the towel (bear in mind I've worked over a decade in the PC repair industry, and my malware removal/repair skills are not insignificant - this was an unrepairable mess).
Each computer in our house (except my wife's Windows 7 laptop) is now running Debian stable. I wouldn't wish this solution on someone else due to the amount of time getting everything set up, but for us it works. I've also found that once I have a LINUX system established, it tends to remain stable (with the exception of when my three year old somehow enabled all of the Accessibility options on one of them simultaneously - that was fun to undo). Each desktop has Minecraft installed. The girls would like Windows games, but the amount of effort involved in getting one running via Wine (or Crossover, or even PlayOnLinux) typically far exceeds the amount of free time I currently have available. Whenever they complain I point out the PS3, the PS2, the Wii, the arcade machines, and that pretty much ends that dialogue. Yes, first world problems.