As I've said, I'm an organization nut when it comes to my video games.  Beyond keeping track of the games in a database, I also keep them stored safely in cases.  Games for the Nintendo GameCube, Wii, and Sony PlayStation 2 are easy enough to store (they're just DVD cases, after all), but when it comes to Game Boy Advance games, I make use of the extra storage slot inside a Nintendo DS game case.  For those who are unaware, DS cases include a special slot inside to store a GBA game in addition to a DS game.  Being the neatnik that I am about these things, I don't just shove GBA games into whichever DS case has a free space.  Oh no.  I have a system, a way of correlating GBA games to DS counterparts so that when I want to play a specific GBA game I don't have to go hunting through a stack of plastic to find it.  Allow me to share my sorting method with you.  It could come in handy someday.

Some match-ups are obvious.  Super Mario Advance 2: Super Mario World goes into the case for New Super Mario Bros. since both are 2D side-scrolling Super Mario games.  Sequels go with the original game, so it makes perfect sense to keep Super Mario Advance 3: Yoshi's Island in with Yoshi's Island DS.  Then things get a little more loose.  I keep Mario Tennis: Power Tour with Mario Hoops 3-on-3 since they're both Super Mario sports games.  Sonic Rush and Mega Man & Bass stay together since they're both third-party platformers starring long-lived mascots.  Finally, things get more abstract as I look for basic commonalities shared between two games.  Do you see why Super Princess Peach and Drill Dozer go together?  It's because they both have a woman as the main character.  I keep Star Fox Command and the DS Rumble Pak together because the original Nintendo 64 Rumble Pak came packaged with Starfox 64 back in the day.  It's not a perfect system, but it's as darn close to one as I could come up with, and I never have to search the cases to find that one GBA game tucked away somewhere.  I now entrust this knowledge to you.  Store it somewhere safe.