Redefining the sky

The sky's the limit, and Unity starts us off with an endless sky. But through this chapter, we've seen that that endless sky can actually trap us into an ambitious concept that we'll have no chance of completing. So, let's redefine the sky. Instead of wondering how big and complex your game can be, think about the endless array of simple interactions and moments of joy our world contains. Throwing and catching a ball, knocking a pile of stuff over, feeding an animal, growing a plant—the world is packed with simple, effective interactions that ignite our most primitive, most basic "Joy Cortices", which is a neurological term that I've entirely invented just now.

If you want to discover one of these joy-producing real-world moments, study a child. Because games are all about playing, the simple things that amuse and delight children and babies are the stuff of award-winning games. What is Metal Gear Solid if not a complex game of hide and seek? Rock Band and Guitar Hero are...