Vampire Senpai

What is Vampire Senpai?

Tailored, behaviour-triggered messages were seen as more effective than generic warnings, but many participants simultaneously expressed mistrust towards operators collecting behavioural data.

Finally, the study found that these needs and preferences varied widely by product type. 

Notably, sports bettors prioritised fast and clear information that was delivered without the interventions being disruptive. Casino players wanted accessible explanations and real-time support during play.

What is Vampire Senpai?

Younger patrons are increasingly familiar with crypto, but the lack of regulatory adoption in the regulated space can push bettors to offshore or unlicensed platforms, most of which do accept it. At the ICE Barcelona conference in 2025, a panel of international sports betting CEOs lamented the fact that they were barred from adopting crypto, while their black-market competitors were not.

A report released in June by payment provider Paysafe said the percentage of online sports bettors who dabble in crypto is 64%, more than double the US average of 30%. Crypto deposits are only legal in two states, Wyoming and Colorado, but crypto withdrawals are not legal anywhere – 85% of respondents said they would welcome withdrawals as an option, Paysafe said.

“When permitted, crypto would become a top-three payment option for funding deposits (after digital wallets and debit cards), and a top-two payment preference in New York and Illinois,” the report said.

About Vampire Senpai

Andrew Gonzalez, founder of prediction market infrastructure startup ParlayX, believes the ability of small teams to provide liquidity is one of the sector’s defining features. “Anyone can be a market maker,” he said. “You have these two- or three-man shops.”

Jefferies described market makers as the ecosystem’s “liquidity backbone”. They post executable bids and offers, manage inventory and provide prices when customer activity is heavily weighted to one side.

The analysts estimated that an operator capturing a one-cent spread and managing its exposure successfully could generate net economics of approximately $1.69 on a $100 trade. Returns are not guaranteed: adverse price movements and unresolved inventory can offset or exceed income from spreads, rebates and liquidity incentives.