[[caption-width-right:220:Gorrillas, Biplanes, and Derring-Do!]]
->''The deadly Doctor Methuselah seeks to unravel time itself with his solution to the Eternity Equations. Gorilla Khan stalks darkest Africa from conquered Atlantis. Mad scientists, strange sorcerors, and power-hungry dictators all seek to undo the fate of humanity. It's the final century of the second millennium and you are our last hope!''
-->-- The back cover of the [=SotC=] rulebook

Spirit of the Century is a role-playing game of pulp-era adventure, using the FATE system (a variant of the FUDGE system). Characters are described by their Skills, their Stunts (which are basically ways to legally break the rules) and their Aspects. The game is designed as a "pick up game", features open-ended character creation and is fairly rules light. It also allows a large degree of player involvement in shaping the story - both through creating Aspects which define the game background and spending their Fate Points to make declarations about the world around them.

The year is 1922. Aircraft are beginning to fill the skies. Electricity, radio, and the internal combustion engine are transforming the world. The War to End All Wars is in the past and the future is full of amazing possibilities. In the hidden corners of the world lie strange artifacts with astounding abilities; perhaps remnants of legendary Atlantis or Mu. Unfortunately there also lurk sinister forces who would use these scientific advances and strange antiquities to further their own destructive agendas. This is where the Centurions come in.

The Century Club is, on its surface, a social club whose charter is one of philanthropy and the promotion of arts and sciences. Its members are a cross section of humanity's most talented and influential people. Some of those among the Century Club are truly special however. These Centurions, each born on the first day of the first year of the new century, are individuals of extraordinary ability. These amazing people use their talents to guide the world away from darkness and to shape a brighter future.
!!'''Tropes Used In the Game:'''
* CharacterCustomization
* ChandlersLaw: From the gamemastering advice
* CharacterNameAndTheNounPhrase: The recommended title style for character novels
* ChristmasEpisode: The Christmas/Hanukkah-themed supplement ''Spirit of the Season''
* GameMaster
* GameSystem
* HouseSystem: The FATE system, a modified form of the FUDGE system
* MinMaxing
* {{NPC}}
* PaddedSumoGameplay: Even characters ([=PCs=] or important [=NPCs=]) who ''aren't'' supposed to be made of iron, well, ''are''. The initial part of any fight or other conflict can get pretty boring, since barring extreme luck they can easily turn into battles of attrition to get to the first hit that will finally ''count'' for anything. (This is acknowledged as something of a bug by the game's own designers, and later incarnations of the Fate rules -- which can easily be back-ported if desired -- tone it down considerably.)
* PlayerCharacter
* PlayerParty
* YouAllMeetInAnInn: Averted by the character creation rules, which has players create links to at least two other characters as part of the creation process.

!!'''Tropes Used In the Setting:'''
* AGodAmI: Dr. Methuselah
* BigBad Despite having several mostly unrelated villains, the game makes it clear that Dr. Methusala is far ahead of the pack in this setting.
* EverythingsBetterWithMonkeys: Gorilla Khan
* TheGreatDepression
* ForScience
* HollywoodHistory: {{The Roaring Twenties}} and {{The Great Depression}}, with elements of GenteelInterbellumSetting
* MadScientist
* PulpMagazine: The inspiration for the game
* TwoFistedTales
* WeirdScience
* WrenchWench: Sally Slick

!!'''Tropes Invoked or Used by Stunts:'''
* BigFancyHouse: The Headquarters, Lair, and Stately Pleasure Dome stunts
* CoolCar
* CoolPlane
* FortuneTeller
* ISeeDeadPeople: The Voices From Beyond stunt
* JetPack: Engineering stunt (Jackson "Jet" Black's jet pack)
* MadeOfIron: There are whole chains of stunts centered around making the players able to shrug off the most horrifying punishment-- as appropriate to a game inspired by the likes of DocSavage! However, see PaddedSumoGameplay...
* MasterOfDisguise
* MrFixit
* NoOneCouldSurviveThat: The Death Defiance stunt
* {{Omniglot}}: The Gift of Tongues stunt
* OneBulletLeft}}
* PercussiveMaintenance
* PhotographicMemory
* QuickDraw
* ScrewTheRulesIHaveMoney: All of the Resources stunts, which have names like Money Is No Object and Grease the Wheels.
* SchrodingersSuggestionBox: The gadget and artifact rules
* SpeaksFluentAnimal- the King Of the Beasts stunt