A 16-bit game seen through a television. Everything underneath is an ordinary scene: a forest in five layers, coins, a hero and an arcade HUD at 320 × 224. The tube is one line, usePostProcess(crt(POST_EFFECTS.CRT_PRESETS.consumer)), added on top and knowing nothing about the game.
It runs at pixelRatio: 'device': on a dense screen each scanline gets room to take the shape of a beam.
Click the preview first so it hears the keyboard. P steps through the four tubes in POST_EFFECTS.CRT_PRESETS (the composite one also puts ntsc() before the tube, the order the signal travelled in), space takes the tube away to compare, and F goes full screen, where it is scaled in whole steps and looks its best.