I dont know your game so here is a general list of Roll20's capabilities (not at all comprehensive). Roll20 allows you to import images for your map and tokens and set them up in the game. It has character sheets with Attributes (that can be used in Macros and Abilities) and Abilities (a form of Macro). You can also link a token to a character sheet. It has a dice roller so you can roll your own dice. It has a text chat window. It has 3 different options for video and voice capabilities: Tokbox, WebRTC (experimental), and through Google Hangouts. It has access to music via the website soundcloud.com If you would like to give an example of the type of game Spacejammer is we could probably help better. :) - Gauss