They have no value in the real world (yet), but good luck telling that to the millions of gamers hopeless addicted to Microsoft’s Xbox Achievements. Earning some of these digital tips of the cap can takes hours, if not days or weeks. Yet, for many, many gamers, they’re an integral part of what makes the Xbox 360 such a great console.

Admittedly, the thrill of seeing “Achievement Unlocked” and hearing that pleasing little chime after long hours of hunting down in-game items is often its own reward. Some Achievements, though, can test the mettle of even the most dedicated gamers, remaining just a pipe dream no matter how hard they try. Stretch your thumbs and grab some extra batteries before trying to take down the 10 hardest Xbox Achievements.

Read more at Yahoo! Games