There have been projects that are doing this, but this is the first time that a mod has been made. Awaken Dreams is a Lord of the Rings mod (middle earth-mod). There will be in two parts: single player-mod and Multiplayer-mod. The mod will add over 230 new blocks, over 100 new mobs, over 100 NPC's, over 150 new weapons & armours, over 150 new items. and add many new feature etc.