MME now has lighting (Light emitting blocks), as well as a day/night mode.
Multiplayer Map Editor is a voxel-based building game. The entire world is yours to build upon. Build along-side your friends, and use the power of your collective imagination to create something truely unique and amazing. The blocks are small enough to provide a decent level of detail. Filling large areas is easy with the box drag tool, and block copy-and-paste makes building intricate structures simple. If your goal is to run a server, we provide a open source map server. The server software controls the blocks and textures, so your server can be suited to special builds or environments.