Mandate of Heaven is a custom singleplayer level for Crysis. Its action takes place in a public park invaded by chinese army renegades. The goal of the mission is to infiltrate the park and eliminate their commander, who established his headquarters in a sacred temple on the coast. It presents an open and detailed environment to explore, intense battles, and multiple ways to reach your objectives.
The mod is somewhat simple; it doesn't have an insane number of guns, unique objectives, etc. But I really like it that way. It's yet another experience you tailor to your own playing style, the way you would any Crysis level. The opening with the marines was a bit brute-force, but made for some nice action. I enjoyed the mod quite a bit.