Long story short…
Team Fortress 2 had a game called Pyro Tennis.
Essentially 2 teams
1 Fireball / Rocket starts that aims for any target on map initially
Secondary fire is a airblast in which, Increases velocity each time a player uses; of said ‘Rocket’ that could be flicked in a direction of the user then automatically redirects to a enemy that is playing.
The ‘Rocket’ itself picks up momentum continuing until another player has been eliminated.
Please let me know if there are any out there i would enjoy that soo much
Edit: for reference https://www.youtube.com/watch?v=6sTzcRNd_B0