Minecraft wiki entry for Difficulty, associated text: 1 World settings
1.1 Peaceful
1.2 Easy
1.3 Normal
1.4 Hard
1.5 Hardcore mode
2 Moon phase
3 Regional difficulty
3.1 Clamped regional difficulty
4 Effects
4.1 Mob damage
4.2 Other effects
5 Video
6 History
7 Issues
8 See also
9 Notes
10 References