Working on a Rainforest map generator. Thought I'd post my progress here to get feedback on how to make it more rainforest-y.
vines, rain, like snade said... tall grass, surgarcane, lots of ditches, small humbs etc.. also some smaller trees (perhaps fence poles with 2 or 3 voilage) and chickens, zombies, creepers, skeletons and spiders, some pig... no wolfs or cows
Both temperate and tropical rain forests are very dense from the ground to the top of the canopy with plant life; lots of shrubbery inbetween the trees making travel through them difficult. Rivers are are best way to get around.