PokerStars has made five millionaires in the last week during its special Spin and Go Anniversary.

The online poker giant is celebrating the first year after the introduction of the new lottery-style sit and go tournaments. The three-handed hyper-turbo games pay out a randomized prize pool, from double to thousands of times the buy-in.

Coinciding with the anniversary, PokerStars made a permanent change to its payout structure—the top prize was more than tripled—from 3000x the buyin to 10,000x.