This concluding chapter completes our development journey with Dead Keys and Unity development. Here, we'll see tips and tricks for game optimization to improve performance across a range of systems, from desktop and consoles to mobile devices and the web. We'll explore techniques for optimizing assets for mobiles, both textures and meshes, and for configuring our scripts and software design to perform optimally. We'll also explore techniques and ideas for mobile deployment, and we'll consider VR and other platform types. In short, this chapter is a wide-ranging tour of miscellaneous topics that don't fit specifically into any single chapter previously, but are nonetheless important and should be carefully considered. So let's get started!