About this app
How to play Merlins Grimoire
“Here’s an API. Bernard and 88 other people can market-make all these request-for-quotes (RFQs),” Marantelli says. “Some people might come in and just do esports because they’re esports experts. Others do everything. Some focus on same-game parlays. But it’s a sportsbook.”
The institutional layer is largely invisible to customers presented with a P2P proposition. Retail users may technically trade against one another, but the depth required by a mass-market product cannot be supplied by occasional customers alone. Professional firms must be prepared to quote continuously and commit substantial capital.
Marantelli says the London-based White Swan is a significant market maker on several secondary exchanges, accounting for as much as 40% of activity on some platforms. Its particular focus is the RFQ, parlay market.
About Merlins Grimoire
The Polymarket water tower can be seen from I-94, but isn’t overly prominent, as the interstate passes beneath three bridges—Concord Avenue, train tracks, and a service road—near the Mount Elliott exit.
But the advertisement is still garnering plenty of attention online and in the news, with the controversy surrounding the Polymarket branding a major topic of discussion in prediction market and gaming circles.
A man who answered the phone at Mount Elliott Crushing said he was unaware of any controversy involving Polymarket and the state.
What is Merlins Grimoire?
In July last year, Veikkaus iGaming EVP Jarkko Nordlund told iGB: “The competition will be fierce when the market opens, so we must be very competitive. Our aim is to challenge the mentality of our current position, so we need to secure market leadership.”
According to its interim report for the first half of 2026, released this week, Veikkaus reported a 1% yearly increase in sales revenue of €471.3 million ($546.8 million).
Operating profit rose to €227.7 million, up from €220.6 million, while profit for the period reached €234.2 million, compared to €229.6 million a year earlier.
