Hi guys, im looking for some quick answers. Will appreciate it.

1. As of this time, is the game worth a purchase? I downloaded and played the demo yesterday, tristram area. seems to me like this one the map is a lot more linear than the first 2. mostly a tight path to follow before reaching the destination. Used to be we get to explore huge area.

Thoughts? Is the overall experience (map,skills(can you even level up your skills? synergize them?),stats) been simplified compared to D2?

2. What is the best method of buying this game? Getting the hard copy at games store or get it from Diablo official site?

3. Once I purchased, downloaded and installed, what happens in the future should I reformat my machine?
How is the backup like? I can't backup this like other games can I ? So just backup the D3 folder?

4. Even single player mode I need to be signed in their server. How reliable is their server? I do not wish to pay rm1xx and be at their server's mercy (not able to sign in, laggy etc.)

5. May be silly question but, what happens if someday Blizard decides to shut down all the servers. Does that mean I can no longer play the game I purchased?

Thanks guys.