''In Nomine Satanis / Magna Veritas'' is a French TabletopRPG, or more accurately pair thereof: The first half, ''In Nomine Satanis'', is for evil campaigns, where the players play a group of demons on some nefarious plot to corrupt humans and/or kill angels; the second half, ''Magna Veritas'', is the opposite.

The game is extremely tongue-in-cheek, full of pop culture references and very fun to play.

The game, currently in its fourth edition, is no longer sold since 2006. The American ''TabletopGame/InNomine'' is derived from this game, but very different.

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!!This game provides examples of:

* CelestialBureaucracy
* CelestialParagonsAndArchangels
* CharacterClassSystem: Player abilities are greatly influenced by the Archangel or Demon Prince they serve.
* CloudCuckoolander: God himself in the third edition backstory. He's technically omniscient, but only actually knows stuff he cares about, and often doesn't bother thinking. [[spoiler:Fourth edition implies that this was actually ObfuscatingStupidity to help the continuing implementation of his constantly running XanatosGambit.]]
* ContemptibleCover: The third edition rulebook, demon side, features a pentacle with "In Nomine Satanis" written in big golden letters. Written in the pentacle's circle were three satanic commandments: [[RuleOfFunny Don't walk on the opossums - Eat kiwis - Let your teeth grow]]
* CouncilOfAngels
* DeadBabyComedy : more often than not.
* DemonLordsAndArchDevils
* DepravedBisexual: Andréalphus, demon prince of Sex would be seen as such, if he didn't actually were into AnythingThatMoves.
* DivineConflict: Lucifer's rebellion against God is a key event.
* DoubleSidedBook: The third edition rulebook.
** the same goes for the fourth edition.
* ForeignRemake: ''TabletopGame/InNomine''.
* GambitPileup
* GoodIsNotNice: The ''mellowest'' of the militant Archangels come off as this; the more hardcore ones fall straight into LightIsNotGood and PureIsNotGood instead, often being intolerant, sexist or fascistic (or any combination) assholes.
* HaveYouSeenMyGod: In the third edition, God is off on a thermal cure. The fourth edition is explained by him coming back and changing the rules of the Big Game.
* HereThereWereDragons: Dragons, [[TheFairFolk fairy peoples]] and lots of other supernaturals were wiped out (or almost so), mostly by [[KnightTemplar George]], [[PureIsNotGood Archangel of Purity]], shortly after Christianity began, and not exactly for altruistic reasons. Most of the less militant (and even a few militant but more tolerant) Archangels hate his guts as a result.
* InnBetweenTheWorlds: "Chez [[{{Jesus}} Régis]]".
* JesusWasWayCool: And still is one of the nicest guys in the setting. It's been noted though that he's no more or less "son of God" than any other Archangel.
* NorseMythology : the asgardian gods appeared as a third faction in one scenario, before geting thir own supplement.
* NumberOfTheBeast: The games uses d666. 111 is the best outcome possible for angels; 666 for demons.
* PaintingTheFourthWall / SelfDeprecatingHumor : the best possible performance for the angels of Diplomacy are "Sustaining a Conversation with Croc (the game's authors)" and "Making Croc change his mind".
* PsychicPowers: Possessed by humans with enough of Adam and Eve's genes (they weren't really the first humans, see, just two picked from the lot and put in a controlled environment by God for a pet project to see if RousseauWasRight).
* RuleOfFun : in spades
* WeAreStrugglingTogether: Both Archangels and Demon Princes are split into several bickering or even [[EnemyCivilWar outright hostile]] factions. [[spoiler:JustAsPlanned.]]
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