The game will feature a programmable CPU (probably the same DCPU-16 CPU as 0x10c) which you can control with assembly code, ship construction and multiplayer shared over multiple servers. The main vision of the game is to create something completely open that can be driven by players, modders, and an open story. The less restrictions and limitations the better.
Multiplayer will probably work by running multiple instances across various servers. Server administrators will be able to connect their servers together in a similar fashion to IRC network architecture. This will allow small communities to grow and combine with minimal effort, also allowing the game to have potentially massive universes with minimal load on individual administrators or servers.
Please note: information found on this wiki is current as of the time that it is written, and is subject to change.