''At Play in the Fields of the Lord'' is a 1965 novel by Peter Matthiessen. In 1991, Brazilian director Hector Babenco filmed an adaptation with a cast including Creator/TomBerenger, Creator/JohnLithgow, Creator/DarylHannah, Creator/KathyBates, Aidan Quinn, and Music/TomWaits.

Missionaries try to save the Indians/Native Americans, while mercenaries try to wipe them out.

!!This work provides us examples of:
* TheAmazon
* AxCrazy: [[spoiler: Randy's wife]] ends up this way, although there's clear evidence earlier in the film that her sanity isn't long for the world. Guess who they got to play her? [[ActorAllusion Kathy Bates]], of course, who'd just done an Oscar-winning star turn as Annie Wilkes in ''Misery.''
* BadassNative: Moon
* DefectorFromDecadence: Moon
* DownerEnding
* {{Fanservice}}: Creator/DarylHannah has a nude scene.
* FanDisservice: So does Kathy Bates.
* GagPenis: When Randy asks Andie how she knew Moon wanted her, she says "Don't be such a child."
* AGodAmI: Moon takes on the identity of Kisu.
* HopeSpot: Randy gives the antibiotics to Moon.
* IllGirl: A [[spoiler:gender]] inversion, with [[spoiler:Billy]] dying from complications of malaria. If the shooting script were kid lit, it would be guaranteed DeathByNewberyMedal material.
* JustForPun: Nowhere/Now Here
* {{Loincloth}}: In the film version. The Niaruna wear "bellybands" in the novel. When Moon gets an erection, the bellyband hurts.
** An explanation might be required for the bellybands: In the Amazon, men bind their foreskins and tie the binding material around their waists.
* LostTribe: Theorized to be a lost tribe of Sioux or a lost tribe of Jews.
* LoveDodecahedron: Moon likes Andie. Randy likes Andie. Randy is married. So is Andie.
* MightyWhitey: Deconstructed, since Moon is a halfbreed Cheyenne. Further deconstructed since he accidentally starts an epidemic of the common cold, killing them all.
* MushroomSamba: Moon gets a lot of tropes.
* NakedOnArrival: Moon, to the Niaruna.
* NationalGeographicNudity
** Subverted by [[Creator/DarylHannah Andie]]'s SkinnyDipping scene.
* Myth/NativeAmericanMythology and all associated (or at least Sioux and Cheyenne) tropes.
* ANiceJewishBoy: Averted by Wolf, who is anything but nice.
* NoOneCouldHaveSurvivedThat: Moon
* NudeNatureDance: Played with, though the film version is definitely not fanservice, since it's Kathy Bates [[spoiler: and her character's basically gone nuts]].
* PottyFailure: [[spoiler:Billy wets his bed]] at one point in the film, but in this case it's meant as an ominous sign that his illness is worsening. Specifically, [[spoiler: his malaria is progressing to blackwater fever and his kidneys are failing.]]
* RapeAsDrama: Moon sees Andie naked. But he can't have her since she's married, so he goes home and rapes his wife, Pindi.
* ShaggyDogStory: Moon wants to help the Niaruna, but in the end, he gives them the flu, which kills them.
* ShoutOut: The Music/{{Sepultura}} album ''Music/{{Roots}}'' was inspired by the film adaptation.
* TitleDrop: "I'm at play in the fields of the Lord."
* TooGoodForThisSinfulEarth: [[spoiler:Billy.]]
* ValuesDissonance: An in-universe example. Young Billy is having a wonderful time with the Indian kids his age, running around as stark-naked as they are and making friends of sorts despite the language barrier; but when his mother finds him, he and his companions are [[spoiler:watching a pair of adults frolicking in a hammock]], and he's still completely undressed. This ends about as well as you'd expect given that his mother is a [[spoiler:sexually puritanical fundamentalist Christian with severe underlying issues of her own]], and Randy has to physically intervene when she starts ''beating up'' the Indians immediately afterwards. Afterwards he tears a strip off her for this, stressing the dangers implicit in her use of violence and her failure to understand that [[spoiler:the Indians don't share the missionaries' sense of morals (yet). Furthermore he tells her she risks giving her son a distorted and harmful view of human sexuality.]] When Randy's wife says "What if one of those things lays a hand on Billy?", Randy simply replies "He might like it."