In this chapter, we will develop a simple game: Quinto. Along the way we will demonstrate most of the tools that Squeak programmers use to construct and debug their programs, and show how programs are exchanged with other developers. We will see the system browser, the object inspector, the debugger and the Monticello package browser. Development in Smalltalk is efficient: you will find that you spend far more time actually writing code and far less managing the development process. This is partly because the Smalltalk language is very simple, and partly because the tools that make up the programming environment are very well integrated with the language.