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Plugin Downloads

Free GB Studio 4.2 plugins for Game Boy Color development — engine modifications, audio tools, and UI utilities.

All plugins are free to use in your GB Studio projects. Created by Morphoice. To install, extract the zip into your project’s plugins/ folder.

SmoothFade

Engine Modification GB Studio 4.2.x (CGB)

Replaces the default harsh palette swap fade with smooth linear interpolation across all 64 CGB palette entries. Supports fade to white, black, or custom RGB color.

  • Three speed presets: 8-step (fast), 16-step (medium), 32-step (slow)
  • CGB 5-bit per channel interpolation
  • Deferred palette writes (compute during display, write at VBlank)
  • Custom fade target RGB color via included event plugin
  • Compatible with standard GB Studio fade events
Engine override (fade_manager.c, vm_palette.c) + Event plugin (Set Fade Color) Download

ToneBeep

Sound / Audio GB Studio 4.2.x

Patterned pulse-wave beep sequencer for warning tones, radar locks, and alert sounds. Runs on CH1 or CH2 with automatic music driver muting.

  • 5 built-in warning patterns (status change, waterfall, radar uplink, missile approach, caution)
  • Dual-channel independent operation (CH1 + CH2)
  • Pattern step sequencer with frequency and duration
  • Automatic SFX interrupt handling with auto-resume
  • Per-frame update with volume control
Engine C code + 3 event plugins (Start, Stop, Update) Download

NoiseDrone

Sound / Audio GB Studio 4.2.x

Continuous noise channel drone generator with portamento pitch sliding. Uses the Game Boy’s CH4 noise channel for atmospheric drones, engine sounds, or environmental ambience.

  • 23-step pitch table (205 Hz to 9362 Hz)
  • Portamento sliding between pitches
  • 15-bit LFSR (hiss) and 7-bit LFSR (buzz) modes
  • Volume sliding independent from pitch
  • Automatic music CH4 muting and SFX recovery
Engine C code + 4 event plugins (Start, Stop, Set Frequency, Update) Download

SetTextPalette

UI / Text GB Studio 4.2.x (CGB)

Set the CGB palette and background fill color for text rendering. Fixes white spacer tiles that appear when drawing text on dark backgrounds.

  • Select any of the 8 BG palettes (0–7) for text
  • Choose between white or black background fill
  • Essential fix for games with dark-themed UI
  • Simple single-event plugin, no engine modifications
Event plugin only (eventSetTextPalette.js) Download