Its exact origin is unknown at the moment.
Sage Creek seniors begin their games early in the school year and play by the rules available on http://sa.sagecreekhs.com/
The first senior assassins game played by seniors was Senior Assassins 2017-2018.
- Coordinator: Keegan Canfield
- Winners: None(See Junior Assassins for more info)
- Coordinator: Joey Babcock
- Winners: Danny Rubin and Harrison Logan of "Yak Attack", Sebastien Valencia and Jack Baldner of "Toe Snatchaz".
Due to COVID-19, the game was ended early.
Bryce Allen, Matthew Oakley, Diego Garcia, Oscar Hackworth, Grace Dieter, Sydney Tomaneng, Tyler Jones, Cole Younger, Hunter Bassett, Jacob Caruso, Gabrielle Kan, and Manny Loma.
- 2018-2019/Class of 2019 - Danny Rubin and Harrison Logan of "Yak Attack", as well as Sebastien Valencia and Jack Baldner of "Toe Snatchaz".
- 2017-2018 - Police Called due to 'Suspicious persons with possible weapon', was actually just a Senior Assassins attempt
- 2018-2019 - Administration mistakes a senior assassins related statement as an active shooter threat
- 2018-2019 - One player hits another player with their car leading to an amendment to the rules
- 2019-2020 - Another player hits a different player with their car, proving the amendment didn't work