Roll20

Roll20 is a web-based virtual tabletop platform designed for playing tabletop role-playing games online. It provides tools for running online sessions, including character sheets, a dice roller, maps and tokens, handouts, and a library of community content. Roll20 supports multiple game systems and allows players and game masters to manage combat with grid-based maps, tokens, and dynamic lighting and fog of war features, subject to subscription level. It also includes a built-in chat, plus integrated voice and video chat, and supports macros and API scripts for automation on the Pro tier.

Users access Roll20 through a web browser; no software installation is required. There are companion mobile apps for iOS and Android to access games on the go.

Roll20 offers a free tier with core features, and paid subscriptions that unlock extras such as higher asset storage, dynamic lighting, and API access to custom scripts. The Roll20 Marketplace hosts user-created modules, maps, character tokens, and art assets.

Roll20 has become one of the major platforms for online RPG play, used for campaigns across Dungeons & Dragons, Pathfinder, and many other systems. It is maintained by Roll20, Inc., and supports both homebrew content and published adventures through its integrated tools and marketplace.