Entity

"...Pack your bag, take your best gear and all notes about secret research projects in Vietnam war. Tomorrow you’re flying with us. You’d better be as good as they say you are, because Vietnamese jungle will kick your ass in no time..." Entity is a deduction game where one player plays as an unknown being, a result of a secret government operation conducted during the Vietnam war, whereas other players play as spec ops sent to recon the area of a secret research outpost hidden deep in the jungle. Every game is a new struggle for humans, because they are aware of the hostile presence, without realising what kind of entity might reside in this unknown territory. —description from the publisher