We played a variant of this in Poland called "Oszust" (liar). Jokers were used and counted as any card. Person who has 2 hears starts and plays it openly. Ever

We played a variant of this in Poland called "Oszust" (liar). Jokers were used and counted as any card. Person who has 2 hears starts and plays it openly. Every other card is played covered. You can play 1,3 or more cards at once (you can't play 2). You can play cards of the same rank as the last person or 1 higher than the last person. You can cheat by playing more or less cards than declared as well as lying about their ranks. At any time anyone can say "oszust" and check last played cards and either he or the person lying takes all cards except the first from the discard stack. Also if you don't play any cards in a given round - you have to take 1 card from the unused cards stack. If the stack of unused cards is empty you put all cards from the discard stack except the last into the unused cards stack and continue. The player who has no cards wins. Then the rest continue for the 2nd, 3rd etc places. When 2 players remain they both are losers and the game ends. We played this on every break at university, sometimes with double deck and 8 people playing. It's great for bluffing and psychologic warfare.