Six letter cards (with the letters S-E-R-V-A-S) are placed face-down in front of a larger word saying "SERVAS". The active player draws one of the cards and flips it open, then can decide to draw the card at the letter just drawn, or quit. If s/he quits, s/he scores a point for the card and keeps it. If s/he continues and draws a letter where the adjacent card has already been drawn, s/he loses the cards for the current turn.
When all cards have been drawn, the procedure is repeated with the other player starting. After two rounds, the player with most points is the winner.