I have played this game many a time with both friends and strangers, and it is fun every time!
Here are some "extended rules" to add in, once you are familiar with the basics.
1. The nopass rule. You have to get 3 guesses in a row correct before you can pass. Additionally, you cannot pass on a 7 or an 8, the "middle" cards.
2. Two in a row rule: If you guess incorrectly, and the newly flipped card is the same as the current faceup card (two of the same card in a row), you drink double!
3. Sandwich rule: If you guess incorrectly, and the newly flipped card is the same as the card under the current faceup card, it is a sandwich, and you drink double! (For example, EightThreeEight would be a sandwich)
4. Card number number card rule: If you guess incorrectly, and the number on the card is equal to the number of cards in the faceup pile, you drink double! (For example, if the pile was aceseveneight and then you guessed incorrectly on a four, you would say "four on a four!" and drink double)
5. "Same" rule: If you call "same" (instead of hilowblackred), and get it correctly, the dealer finishes his drink and your turn ends.
Rules 24 are cumulative in their doubling. 
Posted by Anonymous 
20050131 00:00:00 
We play a similiar garm called HiLo, Smoke or Fire. Rules are the same for the hilo part, but you also have the option of saying if the card will be a black or red card. This eliminates the same card flipped. You need to flip a minimum of 4 cards before passing on to the next player and adding more cards to the flipped pile. 
Posted by Anonymous 
20030825 00:00:00 
