Most simultaneous on-screen enemies in a videogame

Most simultaneous on-screen enemies in a videogame
Who
Dead Rising 3 (2013)
Where
Not Applicable ()
When
The Dead Rising games have always been about pitting players against vast hordes of hungry zombies, and in Dead Rising 3 (Capcom, 2013) the maximum number of animated corpses on-screen at a single time has increased to 21,000.