Scratch Cards are a very popular form of gambling, although many might not see it as gambling. You can buy scratch tickets in most countries around the world, scratch cards are usually made of cardboard and have areas that contain concealed information which is usually covered by a substance that cannot be seen through, but can be scratched off.
Scratch cards are popular because the relatively low cost and the opportunity to win instantly. The low cost of buying a scratch card is offset by the small prizes and the lower expected value, compared to casino jackpots or lotteries.
There are many different types of themes involved with scratch cards, there are also many different variations. There are bingo scratch cards, keno scratch cards as well as cards which require the player to match three (or varying numbers) of the same prize amounts.
One scratch card that seems to be very popular is the Set For Life or Win For Life which gives you a set amount of money over a period of years instead of a one off payment.