It's amazing except for the fact that's it's the most hard mode mod around. It makes Greg tech look easy. I swear to god! He nerfed running. He nerfed furnaces. he nerfed water. Water! You can't pick it up with a bucket instead to move water you need to use a series of pumps. He made it so that over time under ground got harder so when you are a week into your world you can no longer mine stone with wood later you can't move some with stone and eventually the ground becomes so hard you have to use a diamond pick to get through it. It is the worst most fun mod made. Also the mod is done. He said that he was finished with it and that it had everything he wanted in it. It's for 1.5.2. I recommend you try it because it is incredibly immersive and a tribute to good game design.Admittedly looked up the mod and thought it looked cool