Minecraft wiki entry for 0x10c, associated text: Minecraft has a completely different focus. Instead of having realistic movable lights, it focuses on having every single block in the game capable of emitting lights. This means you can make a huge lava river and have it light up your house from below, as the lighting can come from every single block of lava in the river. In 0x10c, there will be way less light sources, and as a result, they can be much more complex. – Reddit, u/xNotch, March 10, 2012