Love letter is another simple bluffing game, with a little less to offer than Coup but with greater simplicity and a more pleasant theme.
You are trying to get your love letter to the princess. The deck of 16 cards represents 8 roles around the castle, with higher numbers being closer to the princess. You get 1 card to start. Your gameplay each round is to draw 1 card, discard 1 card, and do whatever it says on the card you discarded. Whoever has the highest value card at the end (or is the last suitor standing) wins the round.
It really does not get much simpler than “draw 1, discard 1.” Depth comes from bluffing and guessing. For example, one card is the princess; if you discard it, you are out of the hand (the princess has burned your love letter). There is no reason to discard the princess … except that someone else might guess that you have the princess and force you to. The next most valuable card is her closest friend, who you must discard if you have a card close to it in value, such as the princess (or else you lose the hand) or the king (who is #3 in value anyway) … or you might discard her and hold onto a lower-value card to potentially set up a better position for the final card.
It is a lovely little game you can learn in less than a minute. “Draw one, discard one, try to have the highest number at the end. Everything else is on the cards, and there are only 8 different cards.” And go. Elegance in design.