Developer: "There you go, have a play."
Player: "Well, what do I do?"
Developer: "Anything you like!"
Player: "Ok, I think I'll go talk to those ghosts over there, make friends."
Developer: "Ok, you've made friends with the ghosts. See how they start to follow you around."
Player: "Nice! Ok, I think I'll explore a bit. Ooo, what's this glowing item over here?"
Developer: "Explore! Find out!"
Player: "Well it's different to the smaller glowing items I've been eating. I'll try to eat it though."
Developer: "You feel different."
Player: "In what way? Oh ok, I get it! I have to work it out. Hmm, I'll ask my ghost friends if they have any idea."
Developer: "There, you've walked up to your ghost friends, eaten them and spat out their eyes."
Player: "Ok I... wait, what?!"
Developer: "You're a bad person. Bad, bad, bad!"
Build a sandbox game, don't try to force your game into a sandbox.
A man said to the universe:
"Sir, I exist!"
"However" replied the universe,
"The fact has not created in me
A sense of obligation."
-- Stephen Crane