Every year, Millward Brown Optimor ranks the top 100 most powerful and valuable brands in the world. This list also includes a gaming category, so we can find out just how much our favorite brands are worth.

According to the report, gaming itself stayed strong as a money-saving form of entertainment. (Compare, per hour, the cost of going out on the town versus the cost of a game that you get 30 hours of enjoyment from. Makes sense!) Gaming consoles are also quite the transformer lately, with some serving as complete family media centers in the home.

Nintendo’s Wii is still the tops in the gaming category. Its brand value has increased 21 percent over the past year. Coming in second is the Nintendo DS, so Nintendo is obviously still doing something right, despite the fact that the two systems are starting to show their age.

Nintendo’s main source of success is the Wii itself, with the main sales increase (40 percent) coming from sales of that console. MBO also noted that the Wii is the primary suspect in shifting gaming from a solitary to a community activity. (It does do well at parties.)

Sony, on the other hand, is doing better than it was at first, but it’s still not dominating Wii sales. 3.8 million PlayStation 3 units were sold during the last five weeks of 2009 alone, and that’s a 76 percent increase. (Probably due to a combination of the holiday season and the PS3 Slim’s existence, as well as the price drop that went along with it.) The PS3 has had a 25 percent increase in brand value. As far as the list goes, the PSP followed, and then the PlayStation 2 sat at the bottom, with a 58 percent drop in brand value. After so long, this might be the last year of any major PS2 adoption.

(If you’re wondering where Microsoft fell on the list, their brand was fourth on the total list with a valuation of $76 billion. From what I can tell, they weren’t included in the “gaming” list.)