Heroes of Tenefyr is a fully cooperative deck-building game for 1 to 4 players. You represent one of the four heroes and start out inexperienced, but with a unique skill card. As you fight your way through dungeons filled with evil creatures, you'll gain loot in the form of cards that are added to your starting deck. The most powerful loot is found in the most dangerous dungeons.
Combat is simple, with a combined "push-your-luck" element. Your deck represents your hero's health, so when you run out of cards, your hero becomes exhausted and needs to return to the village to rest. But don't rest too often, because each time you do, the boss moves closer, which ultimately results in the final battle to see if you are truely the Heroes of Tenefyr.