Time-stressed arena FPS. Everybody wants to FFFF you - FFFF them instead, gain time and feed the FFFF Machine until the world ends. Or time.
The distant future, the year 2030. A portal opened on the Moon, spewing forth demons from the FUM-dimension. DJ Oguretz had a worldwide rave tour planned for that year, and these aliens were seriously cramping his style. So he grabbed his collection of CD-Rs, freshened up his hairdo, and hit up the planet’s most lit spots to restore order - because the party must go on.