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What is Sirens Spell?
The total cost of the ad has not been divulged by Polymarket, but it is fair to estimate that it fell in the millions given the high expenses of bringing aboard a prominent filmmaker such as Berg. Beyond director fees, Polymarket also had to budget for agency and concept fees, set construction and post-production costs that include visual effects, licensing and sound design. In late-August, Polymarket disclosed that it has sought a $21 billion valuation in a new funding round led by Donald Trump Jr’s venture firm, 1789 Capital.
Polymarket may defend any substantial investment in marketing given the overwhelming impact on customer acquisition that ensued. On Tuesday, Polymarket ranked first on the App Store in downloads for free finance apps, topping archrival Kalshi, Capital One Mobile and prominent payment providers PayPal and Venmo.
The company did not immediately respond to a request for comment from iGB.
How to play Sirens Spell
The online casino has benefited from the supplier’s advanced and player-favorite titles since August 10, 2026, but the partnership was only announced recently. The implementation of Wazdan content was made possible through EGT Digital.
Wazdan is already present in the Bulgarian iGaming market, which has been expanding rapidly over the past several years. Notably, the supplier has teamed up with WINBET and ELITBET in the past, two other prominent local operators, with SlyBet only adding to the company’s local footprint and momentum.
Wazdan Head of Sales and Business Development, Radka Bacheva, has welcomed the opportunity to see her company expand its clout in Bulgaria once again, with Bacheva adding:
How to play Sirens Spell
Beyond raising the age limit to 21, Van Dijk called for a complete reversal of the Netherlands’ 2021 online gambling legalisation, which helped establish a reasonably mature legal gambling market for the sector, until tighter restrictions for players, and increased taxes, struck licensed operators in recent years.
Van Dijk also voiced his opinion that all gambling advertising should be banned, including for lotteries and land-based casinos.
He also questioned the government’s involvement with the state-owned entities Holland Casino and Nederlandse Loterij, especially in its assessment on how to limit gambling harms.