The goal of Boss Monster is to lure Heroes into your dungeon and kill them. Heroes who die in your dungeon are turned face down and count as “Souls.” Heroes who survive give you “Wounds.”

The game ends when one of the two following conditions has been met:

1) If a player ends the Adventure Phase with 5 or more Wounds, then that player loses the game. If there's 2 or more players left, they continue playing.

2) If a player ends the turn with 10 Souls and less than 5 Wounds, that player wins the game and the game ends for all players.

If there is a tie at the end of the game, do the following to determine the winner:

- Subtract each player’s Wounds total from their total Souls. The player with the higher result wins.

- If there is still a tie, the player with the most XP wins.