Fictional sports are cultural universals, something that all cultures on Earth engage in. Fictional games often include some world specific element to make them more fantastic (requiring magic or a special power to be played, making use of a new future technology, or played in a novel location like in zero gravity space, for example).

• Sports may be played solo, against a single other player, or with a team.
• Sports may be symmetrical or asymmetrical. If asymmetrical often turns are taken between the teams.
• Sports may have some form of luck involved, or have no luck involved.
• Sports are often played in large arenas where fans can congregate. Consider if this also occurs with your fictional sporting events.
• Sports teams can have sponsors and will often showcase company logos.
• Sports players may be famous in your fictional world.

Often fictional sports are related to, or represent a novel approach to, an already existing sport on earth. These reskinned sports often have the following as their base.

• Football (American)
• Football (Rest of World)
• Hockey
• Capture the Flag
• Basketball
• Baseball
• Laser Tag/Paintball
• King of the Hill
• Triathlon
• Vehicle Races
• Archery/Shooting Boxing

The creation of fictional sports is common in worldbuilding: Quidditch of Harry Potter, Podracing in Star Wars, and Brockian Ultra-Cricket from The Hitchhikers Guide to the Galaxy are all examples of imagined sports.