Places of darkness, oppressive heat, and air so thick with humidity it feels like you could drink it—jungles and other tropical rainforests are dangerous even before you encounter the wildlife that hunts even the hunters. Included here are a series of challenging environments for your players to encounter while moving through such an environment, though many would work well for dense forests of all climates.

This article introduces the mechanic of rare skills to Level Up: Advanced Fifth Edition, and details four new rare skills, collectively known as the elemental skills. Mechanically, rare skills function exactly like normal skills except that a character can only attempt a rare skill check if a feature explicitly grants them access to the skill.