Arthur Madrid is an angel investor and operator angel based in San Francisco, California, United States with 3 known investments: Revel Games, Producteev and Rumble League Studios.
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Investment focus
Contacts
Arthur Madrid portfolio companies (3)
- Revel Games
- Producteev
- Rumble League Studios
Affiliated funds' portfolios
Founder at The Sandbox, whose known portfolio counts 10 companies
- Carv
- Igloo
- LandVault
- Matera
- reNFT
- io.net
- Cyan
- Smobler Studios
- Cosmo Media Labs
- UGC90 Ultimate Gamechanger
Investor Profile
The known portfolio sits in sector Consumer, and focus area Gaming.
Stage-wise, the known deals cluster around Seed rounds.
The portfolio and focus above give founders context on whether Arthur Madrid matches their raise.
Colleagues at The Sandbox
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Frequently asked questions
Who is Arthur Madrid?
Arthur Madrid is an angel investor and operator angel based in San Francisco, California, United States with 3 known investments on file, among them Revel Games, Producteev and Rumble League Studios. The sections above list the sectors, stages and firms attached to that record.
What does Arthur Madrid invest in?
Listed sectors include Consumer; listed focus areas include Gaming. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Arthur Madrid invest at?
The known deals of Arthur Madrid include Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Arthur Madrid listed at?
Arthur Madrid is listed as Founder at The Sandbox. 4 other people in the database share a firm with Arthur Madrid.
How do I contact Arthur Madrid?
An email address and a LinkedIn page are on file for Arthur Madrid. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal