Gamma Utils (Fullbright) — Mod to enable maximum brightness and Night Vision in Minecraft

Gamma Utils (Fullbright) — Mod to enable maximum brightness and Night Vision in Minecraft

Gamma Utils (Fullbright) is a client-side mod that removes the limit of the standard Minecraft brightness slider and raises the maximum gamma to values where caves look like day, and night on the surface is almost indistinguishable from daytime. The vanilla slider in the settings caps at 100%, whereas the mod raises the upper limit to 1500% by default and even higher through manual config editing.

Main Features

The basic task is toggling gamma with the G key between two values: the working one (100% by default) and the elevated one (1500% by default). The state changes instantly, but you can optionally enable a smooth transition — then the brightness increases at a configured speed in gamma units per second.

Separately, there is Night Vision bound to the H key. Unlike simply raising the gamma, Night Vision works with most shaders. Raising the gamma in combination with a shaderpack has no effect because the shader itself controls light rendering — so for players with Iris or OptiFine shaders installed, H remains the only working option.

Pressing G in a dark cave — before and after shot, the darkness evens out to daylight

Commands and Keybinds

In addition to hotkeys, the mod registers a full set of commands /gamma:

Night Vision is moved to a separate branch of commands /nightvision with a set of arguments analogous to /gamma, plus the H key for instant toggling. The up and down arrows are bound to increase/decrease gamma by default — the step is configured in the config (10% by default). All keybinds can be reassigned via the standard Minecraft controls menu.

Keybind settings screen 

Config

The gammautils.json file is located in .minecraft/config/.

Conclusion

Gamma Utils (Fullbright) bypasses the artificial limit of the vanilla brightness slider and provides visibility in caves, the Nether, and at night. It is suitable for survival with long cave sessions, players who do not like holding a torch in their hand, and for taking screenshots and videos of dark structure interiors.