Wink, otherwise known as "21", is a fast-paced card game with simple rules and a completely random course of the game. The player draws another, face-down cards from the deck, adding up the value of drawn cards expressed in points. The goal is to get the total as close as possible to twenty-one points. It is this score - 21 - that is referred to as the "black" and is the best possible score in this game. If the total of twenty-one is exceeded, the player loses. Two or more players successively draw cards until the final result is obtained, then the result is entered in the table and the next player begins to draw cards. Whoever gets the most pips wins. The blackjack card game may last any number of such rounds - to be determined by the players.

The game uses a classic deck of cards, consisting of four suits. There are two variations of the blackjack game, the classic one involves the use of all cards (from twos to aces), another option is to play with a "small deck" (from nines to aces). Depending on the number of cards used, the scoring of each of them differs:

Throughout the deck, cards 2 through 10 are equal to themselves, the jack is points, the queen is 3, the king is 4, and the ace is 11 points.

Using a small deck - nine is 0 points, ten - 10, figures - no change in relation to the entire deck.

Due to the simplicity of the rules (the only required skill is adding), the "eye" is a great card game, but also a computer game (eg in the online browser version on OnlyGames) for children.