A Game Plan

A jungle would be involved - and a swamp.

Sounds like you need Kings and Things

The Wikipedia description is rather dull and dry, but basically you have a board game made of hexagonal tiles with different terrain, e.g. mountain, desert, jungle, and an army of "Things" (fantasy monsters such as dragons and zombies) that you use to try and conquer it (and your fellow players). We used to play it a lot, back when I hung out with a bunch of gamers in the 80s and 90s. Lots of silly fun!