Buildcraft is an infinite-world block sandbox game, inspired by Survivalcraft, Minecraft and the like. Buildcraft with its truly multi-player feature, you can create world as you like.
2 games included.
Features:
? Walk around, dig and build in an infinite voxel world, and craft stuff from raw materials to help you along the way;
? Simplistic Modding API that supports many kinds of additions and modifications to the game;
? Multiplayer support for tens of players, via servers or local WIFI;
? Voxel based lighting with gameplay consequences (light caves and buildings with torches);
? Almost infinite world and a beautiful map generator.
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LGPL code: https://github.com/gameabc/worldcraft