Fun, a payments infrastructure company building high-converting payment flows for large global applications, has raised $72m in a Series A funding round.
The round was co-led by Multicoin Capital and SignalFire.
The funding will be used to expand Fun’s presence across Asia-Pacific through a new office in Singapore, pursue acquisitions to deepen its infrastructure capabilities, and grow its engineering and operations team.
Fun develops white-label payment solutions engineered around how users of major platforms actually behave, covering deposits, withdrawals and settlement. The company positions itself as an alternative to off-the-shelf payments providers, arguing that at significant scale, generic solutions inhibit growth.
Polymarket VP of engineering Josh Stevens said, “Polymarket runs at a scale that breaks most payments infrastructure. We’ve evaluated every major payments vendor, and Fun is in a different category. They operate like part of our team, building custom flows around how our users actually behave. They are meticulous about every detail and solve edge cases that others don’t notice.
“At our size, every percentage point of conversion is millions of dollars and millions of users — and every reliability failure becomes a public conversation. Bespoke engineering is the only way to deliver results, and it’s how Fun has built the highest-converting, most reliable deposit flow we’ve ever run.”
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