Scratchcard
（重定向自Scratch ticket）
A scratchcard (called a scratch off, scratch ticket, scratcher, scratchie, scratch-it, scratch game, scratch-and-win, instant game or instant lottery in different places) is a small card, often made of thin paper-based card for competitions and plastic to conceal PINs, where one or more areas contain concealed information which can be revealed by scratching off an opaque covering.