Pixelarticons is a single-person project, running since 2014, of pixel-art icons built on a strict 24x24 grid: worth flagging that these are interface icons, not illustrations, despite sitting in this category.
A cohesive retro pixel aesthetic across four sub-styles (Base, Sharp, Glyph, Solid) at a scale that's hard to find elsewhere.
Fits retro-styled UIs, games, or dashboards that want a consistent pixel look instead of the smooth flat icons everyone else uses.
880 icons are free forever under MIT via npm; the full 4,600-icon set is a one-time 99-euro purchase, not a subscription.
Pixel-art style icons made with a 24px grid.