DAILY LOTTERY
Buy tickets at a Lottery NPC in every town. Draws every day. The
jackpot starts at 5,000,000 adena and grows +1% plus all ticket
sales each day, up to a 100,000,000 cap. Match 5 numbers to win the
jackpot PLUS a rotating daily bonus item (soul crystals, top-grade
life stones, A-grade gear, enchant scrolls and more).

MONSTER DERBY
Pari-mutuel race betting. Back a lane with 100k-1M adena; when the
race runs, everyone who backed the winning lane splits 80% of the
whole pool, proportional to their stake. Bet big, win big.