From publisher blurb:
Nalath's ravaged rainforests await restoration, but danger lurks beneath the lush canopy. The Ostara Conservancy offers the heroes a simple task: fly over the affected areas and drop seed bombs. But this seemingly green mission takes a shocking turn when their vehicle is attacked by an unseen force, sending them crashing into the heart of the jungle. As the PCs seek answers, they must navigate xenophobic natives, ancient earthworks holding a deadly secret that could rewrite planetary history, and the machinations of a larger conflict. Can the adventurers overcome these trials, or will the outraged rainforest exact its dire revenge?
Arbor Day is a short science fiction adventure using the Cepheus Engine, Cepheus Deluxe, and Original Science Fiction Roleplaying Game rules. Other 2D6 systems are easily adapted.