You’re ready to start! You have Ruby along with the Gosu and Chipmunk gems installed and ready to go. Next, you’ll create your first game with some Ruby code, the Gosu library, and a few images.
The goal of this book is to make installing Ruby and Gosu as simple as possible for a wide range of users and computers. When this was written, the newest version of Ruby available on Windows was Ruby 2.2.2. When you do the installation, that might no longer be true. Look for the version that starts with 2.2. If you already have a version of Ruby, or if you want to use the latest and greatest, by all means give it a try. For a setup that will get you writing games as soon as possible, use these ...