The latest statistics from The NPD Group show that the sales ratio of Wii game software to console hardware (tie ratio) has exceeded 8:1. In December alone, the average user purchased 8.11 games per console. In comparison, Xbox 360 had a software-to-hardware sales ratio of 7.76 for the month, while PS3 only reached 5.04. Clearly, major titles such as "Super Mario Galaxy," "Wii Play," "Mario & Sonic at the Beijing Olympic Games," and "Guitar Hero 3" have driven the popularity of Wii platform games and also improved its software-to-hardware sales ratio. However, in terms of cumulative historical performance, Xbox 360 still leads with a high software-to-hardware ratio of 7.0, whereas Wii and PS3 are at 4.64 and 4.26 respectively.