Ibu: The Emerald Canopy

Ibu: The Emerald Canopy is the first wilderness hexcrawl sandbox campaign designed for use with the free 5e-compatible Hexbox system but still usable without it.

Sent on a mission of exploration and discovery to a new land across the sea, the PCs find themselves in a mysterious jungle inhabited by strange creatures. This setting includes a 5,000 square mile jungle to explore, three new playable races (the amphibian Katak, birdlike Gagak, and the flexible warrior Pulut), ruins to explore and ancient evils to unwittingly release, a system for the discovery of natural resources ripe for exploitation, and storylines presented not as linear plots, but as general situations your players can interact with as they see fit.

Also available as a paperback or hardcover from DriveThruRPG.