When I say "live events as input", I am referring to what happens in live events affects the game:
- content in a game or an entire game being only available during a certain event (Super Bowl, Eurovision)
- activities in the game being dependent on cyclical passage of time (fantasy sports leagues where you perform trades on certain days and select your "starting line-up" for the week)
- content in the game dictated by live conditions in the real world (mode in a golf game that recreates the same course conditions, weather, and time of day that the PGA tournament being televised live has)
Note: I would NOT consider these valid cases because the gameplay state doesn't differ based on how something in the real-world plays out:
- World of Warcraft gating patch content to arbitrary calendar dates
- A holiday event in an MMO
- mobile game "energy" tied to real-world passage of time
- Animal Crossing making the player wait for X real days
