This year alone, manufacturers of video games will sell about 174 million units. That's a lot of hard-to-recycle metal, plastic and mixed material pieces that will one day end up in a landfill. As gaming continues to grow, retailers are making it easier to give unwanted games a second life. The online site Cash for Gamers (cashforgamers.com) takes all sorts of games -- even broken ones -- and will often even pay you for them. It also provides a recycling service for all sorts of outdated and obsolete games. Retail stores like GameStop have in-store buying and selling services for old games and can be a place to recycle unwanted discs and cartridges, too.