<human>:  When did the Warhammer 40k universe begin?
<bot>: The Warhammer 40k universe began in the year 30k. The Warhammer 40k universe is a science fiction universe that is set in a dystopian future. The Warhammer 40k universe is a popular setting for role playing games, and is also the setting for the tabletop game Warhammer 40,000.