Thanks for playing! Originally I was using an open-source Unity package called QuickDither to achieve a retro post-processing look. It's pretty cool, you should check it out as it has custom colour palettes and it's free. However I couldn't get it to work when I exported to HTML/WebGL. So last minute, I switched over to PSXEffects. Cranked up the resolution factor to pixelate it. And in the post processing settings I set the colour depth to 5. And most importantly, I set the "Darken Darks/Favor Red" setting to 1.75. Which gives it that retro horror atmosphere. Hope that helps :)