Tablero is a board game that I learned in the Society for Creative Anachronism. The rules are simple and play is easy. The game is a lot of fun but NEVER play with hard alcohol as this can lead to severe intoxication and possible alcohol poisoning.

Equipment:

1 Tablero board (shown at the bottom of the page)
2 dice (preferably designed for Tablero also shown at bottom of page)
7 shot glasses (the fancier the better, but make sure they are not fragile)
1 opponent
2 cans/bottles/other of your favorite beverage (usually beer)
 

Drink your opponents beer. All of it. Keep your own beer from being drunk.

Each player places three glasses on their base line and the remaining glass is placed in the center of the board. Each player rolls one die and the high roller has the choice of playing first. If they choose to play, they fill the center glass and roll the dice, otherwise the dice are passed to the other player who must fill the center glass.
Both dice are rolled and one glass moved for each die (i.e. a 5 and a 3 are rolled, one glass is moved 5 spaces and the other is moved three) All moves are vertical and the object is to line up are least five glasses. Five is an acceptable line however it is considered honorable to line up at least six before drinking. I prefer to hold out for all seven. When a line is made the person who made the line must drink at least half of the glasses lined up (the rest may be passed to spectators or the opponent) and place them on the opponent's base line where the opponent then fills them.
At the beginning of the game a lady is asked to roll the dice for the Queen's number. Whatever number she rolls is, thereafter for the rest if the game, known as the Queen's number. Everytime that number is rolled, the player who's rolled it is allowed to pick a glass from the board and drink it. Their opponent is required then to fill the glass and the roller places it wherever they wish on the board then takes their moves and rolls again.
Play continues until a 7, 11, or 12 is rolled. the dice are then passed to the opponent.
Should one player run out of beer (or whatever you are using) and their opponent forms a line that they are not able to then fill they are declared the loser and the winner then distributes the glasses however they might like and a toast is drunk. Local tradition says that the toast must first be to the King and Queen ("whoever they may be"), second, to the worthless opponent (ad lib), and third to themselves (however they want to describe themselves). More can be added.

The line that wins the game should always be all seven glasses (if you want to go for style finish the game with the chevron formation)
It is considered honorable to take a line of no less than six glasses unless you are losing badly.
Playing out of turn occasionally happens(especially after the first few games) and it is perfectly allright to let your opponent know if they are playing on your turn however quibbling about it is not honorable. Just have fun.
One is considered skunked if they are out of beer and their opponent has not opened their second bottle/can/other.

The board is made up of a grid of seven squares of equal size and can be made of any material (I have played on boards that were marked out in duct tape on the carpet of a pavilion) Each square should large enough to hold a shot glass comfortably without it touching it's neighbor. A board that is ready to be played on looks something like this:

(yellow glasses denote being full.. the center is not full because the dice haven't been rolled yet)

 
The dice look something like this (or you can use normal 6-sided dice) sorry about the lousy picture... but I didn't have time to make anything much better...

In some localities the rules may vary slightly... there are always gonna be some descrepancies.. if people in your area who play tablero play a litle differently... well.. when in Rome... hope you enjoy playing...