Steamforged Games Animal Adventures Gullet Cove Bundle: Dogs, Cats, Enemies, the Rat King, and Source Book (5 items)

This expansion was exactly what I wanted, as it gave me and my family more options, and allowing us to bend the rules by adding more players. From having a healer or a multiple node attacker to a character who even doesn't start with anything good; this gives you a chance for more variation and challenge in your games.