pretty decent, except the "games for Windows" logo. Its only ment for games that support the "Live" feature and Blizzard traditionally uses their own multiplayer service. a "battle.net" would be more fitting.
I do have to say, that the title style is a little to crisp for the rest of the box, and the title should have been something else.
DIII:Lord of Lies
DIII:Prince of Lies
DIII:Reign of Lies
DIII:Reign of Belial
Belial's Reign just doesn't have that catchy flare like it should.
When you say cheap, do you mean cheap as in cliche or cheap as in it doesn't look good.
Yeah, cliche-esque. It doesn't sound good, doesn't catch attention and totally not market-viable.
A lore character's name shouldn't be in the title unless he/she is very well known and/or has been dealt with recently. Diablo 2 was realesed some 7 years ago so not even Baal's or Mephisto's name should be a reference let alone Belial's who is unknown to 80% of the fans. Ok hardcore fans like we are know it but others don't
And yes, as above poster said use the 'of ' counstruction instead of 's