Happy Aquarium Pearl Lotto offers a 1,000 Pearls Jackpot
Pearls are the premium currency of Happy Aquarium, and because they're sold with greater discounts the larger the batch that you buy, It's hard to say how much a thousand Pearls equate to real world dollars. At 12 Pearls, you'd pay 11 Facebook Credits or $1.10 USD. But at 200 Pearls, you'd pay 107 FB Credits or $10.70 USD. Going by the largest discount, this 1,000 Pearls giveaway is akin to winning $53.50 USD.
So how does it work? First of all, you get a free daily lotto ticket. (If you want more tickets, you can buy 2 tickets for 1 Facebook Credit, which is essentially $1 USD.) A ticket lets you pick 5 numbers to submit into the lotto. You can submit 5-10 tickets per week. Winners are chosen on Thursday night and announced on Friday. Every Friday is a new lotto drawing.