# Cimaise > Not an image, not a video: every card is computed in your browser. You tune it, you copy its code, it runs on your side. ## What it is - A collection of animated card backgrounds, each one a WGSL shader running on WebGPU. - Nothing is an image, a video or a GIF: every card is computed frame by frame in the browser, so it never pixelates at any size. - Three rooms: Neon (light, tubes, circuits), Kawaii (petals, droplets, characters), Runeforge (wood, iron, bone, gold). - A card is made of a backdrop, a border, sometimes a character — each one a separate, swappable piece. ## What you do with it - You tune a piece, you copy its code, it runs on your side — on your phone, in your webview. - Taking pieces away is not open yet.