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. Clear a dungeon of monsters and you will be rewarded by the villagers. Players will enter dungeons together and fight the enemies within. Whenever the heroes leave a dungeon and return to Tenefyr, time passes. When a certain amount of time has passed, depending on the difficulty setting, the boss attacks. If you manage to defeat the boss, everybody wins, otherwise you all lose.