ACL Injury. The anterior cruciate ligament (ACL) works together with the other ligaments in the knee to connect the femur to the tibia and support the knee joint. A tear in the ACL is one of the most common knee injuries, causing the joint to become unstable and slide forward too much.
There more than 6,000 games currently available on Steam. If it seems like there's a flood of new games on the digital distribution outlet pumped out each and every day that's because new and old developers and publishers are putting up titles all the time.
That is equal to over 100 years of non-stop gaming, and considering that Steam is not 100 years old, this can only be possible if he has logged in a large number of different games for a long period of time using the same ID. You can see the total playtime ladder at Worldwide: Total playtime Ladder.