BktGlitch is a glitch shader with a variety of unique layered effects that will break your game in the good way.



  • Effects such as tearing, noise, colour dispersion, glitch blocks, RGB splitting...
  • Written in GLSL ES - not limited to desktop platforms
  • Easy-to-use setup scripts and presets, no need to set up uniforms manually!
  • A demo where you can adjust all effects manually and even generate the resulting configuration code!
  • Available for both versions of GM:S.

@blokatt |

Please note: If you use GM:S 1.4 on Windows 10, shaders might not work unless you have DirectX 9 installed. I retain all rights to sprites and fonts used in this package.

If you can't buy this or you're simply on a tight budget, message me.

End User Licence Agreement (EULA).

Changes in 1.1.1

Changed floating-point precision back to high.

Version 1.1.1. Published September 13, 2017

Created with GameMaker: Studio v1.4.1772

Age Rating: 4+

Average Rating

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Petr S 10 November 2017

Great shader

Please post updated version for macOS (see email)


Blokatt (Publisher) 10 November 2017

I don't own a Mac myself, sorry, there's no way for me to fix this without knowing what went wrong.
The shader should work on multiple platforms, though, so if the HTML5 demo works for you, your GPU is compatible and this could potentially be a shader compiler issue and thus something YYG has to fix. All I can do is try rewriting it to GLSL instead.

EDIT: Got your message, working on it!


Rejon T 21 September 2017

Best Shader Ever

This shader coupled with it's online tool for creating cool effects is the perfect package for your (and my) needs. It delivers more than what I was expecting from it and has offered great flexibility. Setting it up was a breeze and using it with lerp/sine functions for the glitches intensity offers a perfect glitch on top of it.

On top of this, when I ran into issues with the shader on mobile devices Blokatt was responsive and extremely helpful.

Package contents

Total size 244 KB 4.14 KB BktGlitch
Fonts Objects Rooms Scripts Shaders Sprites

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