The draft would classify gambling addiction as a disorder, impose biometric checks and warnings, and restrict bets on politically sensitive events.
The Virginia bureau said players faced roadblocks cashing out, while the company blamed terms-of-service violations and disputed the allegations.
Players who string together five straight games can win entry tickets from low and high leaderboards, with more than SC 500 paid out each day.
The Monday event offers 3 million Gold Coins and 1,500 Sweeps Coins, while leaderboard points hinge on win-to-play ratios and side plays.
The Solitaire Cash parent says the Chapter 15 filing will help preserve operations while it appeals a sweeping false-advertising judgment.
Players could earn tickets by visiting McLuck.com or wagering Free SC, with a vacation for two to France as the top prize.
The X post asked users how they found the social casino, and responses ranged from friends and Twitch to ChatGPT and Drake.
Gold Coin sales end on August 3, gameplay on August 24 and redemption requests by September 14.
The sweepstakes casino is layering bigger first-purchase bundles on top of a free welcome offer and an eight-level VIP scheme.
The lawsuits target Chumba Casino, LuckyLand Slots, Modo and ARB Gaming and build on an earlier state case against VGW.