An Unusual effect that has a vague air of nostalgia.

Blue - Accursed Castle
Red - Bloodlines
Green - Retro Revenge


This Unusual effect is themed after retro gaming in general, but more specifically of the Castlevania series.
Unlike most Unusual effects which make use of textures rendered from 3D models or rasterized from vector images or otherwise make heavy use of anti-aliasing as a byproduct of the software used, the particles here are drawn as pixel art -- not unlike Death by Disco's skeletons -- and are intended to, for the most part, fall under the color palette limitations of an 8-bit game's sprites.
What's more is that Accursed Castle & Bloodlines make use of the color palette of the NES itself, while Retro Revenge takes its colorization from the classic Gameboy's LCD screen's palette.

Somehow the most controversial Unusual effect on the workshop.