I've played the game previously under WinXP and Vista and also to Win7 times. Just great and nice. However, since then I have my Mac with Lion, it is no longer to install because no PowerPC applications more are supported. On the part of Blizzard's stated only that it would point out to you that it is no longer running under Lion. That will benefit someone with a retail packaging nothing, that's why I'm warning potential Mac users before. Prefer to wait for the 3 Series, for the 2er runs unfortunately only under Snow Leopard or just Windows.