This next pack will let generate your own AAA game ecosystems for Unreal in 10 minutes.
“The forest density is made up of pine trees and birch trees. Depending on your needs, you can create only pine forests, only birch forests, or mixed forests. All seasons are in the package,” states the description. “You can reach realistic results easily and quickly with 10 paintable plant maps. In addition, package contents include roads, railways, electricity poles, traffic signs, and barriers.”
And can learn more and buy the pack here.