In this ONLINE course, students will design and prototype online multiplayer apps and games using p5.js and p5.party. Study topics will include UX/UI for multiple-user software, multiplayer game design and playtesting, sketching and prototyping, client/server architectures, and team coding tools and workflows. p5.party is a library for easily prototyping multi-user experiences with p5.js created by the course instructor and still under development. Students will have the opportunity to work with and contribute to the library. For more information about p5.party see https://github.com/jbakse/p5.party This is an intermediate coding course. At minimum Students should have successfully completed an introductory programming course, have experience with p5.js, and have a strong interest in coding and javascript.