With so many different gaming platforms, it’s a challenge to keep up with (and pay for!) all the latest games to satisfy your tech-savvy kids. But beginning Sunday, September 13, you can save yourself a little cash by exchanging used (or new and unwanted) video games for gift cards at Toys “R” Us. The retail chain is taking a page from video game giant GameStop (who’s been doing this for a while now) by accepting trade-ins at the Guest Services desk from myriad systems, including Wii, Xbox 360, PlayStation 1, 2 and 3, Nintendo DS, PlayStation Portable, even games from ancient platforms such as Atari 2600, Intellivision, Sega Genesis. (Better start dusting off those old cartridges!) Games must be in their original cases with artwork intact. No word on how much each title will be worth, but right now, the abandoned games stashed under your kids’ bed are worth nothing, so you can’t lose…unless the brood convinces you to spend even more than what you get on the gift card. That’s clearly what the folks at Toys “R” Us are banking on.