Quest Sample #1
Almost every quest has dialogue from one of the characters
Cave Generation Sample #1
Vast underground chambers can be found
Set Bonus Sample #1
Most armour sets have bonuses, and Diamond's is pretty good
Set Bonus Sample #3
And some have drawbacks (was changed to Strength II in v5.0)
Cave Generation Sample #2
And lakes filled with treasures
Set Bonus Sample #2
Some even give permanent potion effects
Cave Generation Sample #3
As well as tunnels filled with lava
Quest Sample #2
There's even shops!