Welcome to the SRB2 Doom Builder Tutorial. In this tutorial, you will learn the basics of level designing using a version of Doom Builder 1.68 designed specifically designed for SRB2, SRB2 Doom Builder. You will be familiarized with the most important terms and techniques of mapping and learn about the functions of SRB2DB. This is the first step and most important step in learning how to design stages in SRB2.