This Minecraft mod visualizes the light levels emitted by torches, glowstone and alike directly on top of blocks, this is helpful to quickly identify areas where mobs can spawn. It shows the light level of the airblock above the block the number is drawn onto, this is the block that is considered for mob spawning, light level 7 or below allows mobs to spawn.

Press F9 (customizable) to toggle the overlay.

Press F9 (customizable) and R to reload the configuration file.


After you played with lloverlay the first time a ~/.minecraft/ file is created with all default configuration options, feel free to modify any of those, you can press F9+R in minecraft to reload the config ingame:

  • hotkey: keycode that toggles the overlay
  • debug: activates debug messages
  • drawDistance: distance in blocks in each direction the overlays are drawn, decrease if you run into performance problems
  • textureRow: the textures provided (lightlevel.png) can include multiple “styles” or themes, here you can select which row should be drawn (0 = first row, 1 = second row, …). Each block texture is 16×16 pixel.
  • generateInterval: the interval in milliseconds (250 = 1/4 second) in which the lightlevel data are gathered (if you place a torch its at least 250 ms till the overlays are updated), increase if you run into performance problems
  • showLightlevelUpto: you can set the level up-to the overlay should be drawn.
  • drawNonSpawnable: if set to true draw the lightlevel on halfslabs/farmland/glass where mobs can’t spawn.
  • useSkyLightlevel: set to true for light levels effected by daylight (all surface blocks 15 light level, unfortunately currently also at night times)

How to install:

How To Download & Install Mods with Minecraft Forge

How To Download & Install Fabric Mods

Don’t miss out today’s latest Minecraft Mods

For Minecraft 1.6.4



For Minecraft 1.6.2



For Minecraft 1.5.2



Other Versions:

Click to rate this post!
[Total: 1 Average: 5]