Fireball Island: The Curse of Vul-Kar - The Last Adventurer

The last adventurer has been stranded on Fireball Island a long time. He knows every cave, every path, every snake hole, fire pit, and bug. He has a thing or two to teach the rookies.
The Last Adventurer figure to increase player count to 5!

The Last Adventurer expansion pack includes:

New souvenirs!
Player powers so that all players can survive more easily on the island!
Snakes (small marbles) that sleep on the rocks and attack the unaware!
A giant boulder that will crash down the island, knocking over all in its path!

—description from the publisher