Pacman as a sandbox game:

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
Posted by Melmoth at 7:41 am