GM Forge - Virtual Tabletop

"GM Forge - Virtual Tabletop" is a standalone game mastering tool with competitive features, allowing friends to join through their web browser without purchasing a copy. It includes dynamic lighting, worldmaps, music and video integration, combat tracker, custom character sheets, and a full system builder. The game comes with 6 sample systems and additional user-created content is available through the Steam Workshop. It also supports online, offline, and local network play.