Abyss: Leviathan
Expansion of: AbyssIn Abyss: Leviathan, the threat track is replaced by the border board on which Leviathan cards will be placed. When you explore the depths, if the revealed card is a monster, you can fight a Leviathan on the border. Some new lords and some allies will help you fight, using their power.

30m - 60m

2 - 5 Players

Ages 14+
Bishop8799
I always play Abyss with the expansion Leviathan. It offers a new line of strategy(fighting monsters) and you can be punished if you decide to run away from them.
goldeneyeace
Adds to the base game with a revamped monster encounter mechanic. Unfortunately also adds unnecessary dice and luck to the game, along with situational Lords. Not an essential purchase, only recommended for high player counts. + adds a 6th player, replaces monster encounter mechanic with a slightly more interesting one - monster encounters are highly luck-dependent, new lords are underwhelming
Josey_23
Fills in that missing piece from the core game. Shame I had to order it from the UK - although it is rumored to finally be getting a US release soon.