When was the last time you returned to a DS game that long sat neglected in your collection? (Okay, so the answer to this probably isn't Ping Pals; and if it is, consider yourself a buffoon.)
Had you already completed the game in question, or did you purchase it and get immediately sidetracked by something else? Are there any older games you plan to return to in the near future? This blogger is currently on his third trip through the Yggdrasil Labyrinth in Etrian Odyssey (hence this topic) -- I never completed the title in two previous attempts, but I'm determined to not get distracted this time!