From the blog "Sandbox Update Notes"
+ Added Settings UI + Added "Human" character type + Added "debug_char" character type + Added an additional easter egg world feature (currently not generated anywhere) + Added item: Torch + Added in-game chat (opened with T or /) + Added support for in-game commands, accessible from chat - type /help for a list of commands + Added commands: /help, /time, /update_lights, /version + Added tile-based lighting system + Added support for digging/breaking most tiles + Added font:
