This is one of those games that, on pure mechanical value, is unremarkable, but shines because its theme engages the imagination.
The players are (self-proclaimed) mighty heroes, meeting in the ubiquitous fantasy tavern to exchange drunken tales of their epic deeds, trying to one-up each other. The rules are simple - each player on their turn chooses to either draw cards or to assemble cards they have in hand into a boast. Boasts must be made up of at least a heroic deed and a vile foe, and can be further embellished with a location and/or an outcome if you have the cards. The play must also read their boast aloud in a suitably impressive (or sheepish) tone, which is where the fun comes in - the more into character the player gets, the better. The values of each card are added to score each round. Other cards allow players to interfere with the boast and substitute in their own cards ("You liar - you didn't defeat a mighty dragon, that was the village cat!"). Other 'action' cards spice up the gameplay further.
It's one of those games in which you get out what you put in, but its simplicity, humour and visual style do a good job of immersing the group in the theme and making it fun.