GreenPark Sports was a gamified sports fan engagement platform that built a free-to-play mobile community where sports and esports fans created avatars, competed in mini-games and prediction challenges against rival fanbases, and battled to become the 'Best Fans' of their league and season. Founded in 2018, the company struck partnerships with the NBA, LaLiga, MLS, and Riot Games to layer playable fan experiences on top of live sporting events. In March 2026, substantially all of GreenPark's IP (including its core technology and the ForKeeps mobile game) was acquired by London-based social sports gaming startup Joa, with CEO Tony Grillo joining Joa as a senior advisor.
GreenPark Sports has been acquired
This company is no longer available on our private secondary market.
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
2018
Employees
10–20
Total Funding
$53.5M
3 rounds
Total raised $53.5M across 3 rounds
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Last updated 06-25-2026
Latest Round
Type
Series B
Date
October 22, 2021
Amount
$31M
Valuation
—
Lead Investors
| Date | Round | Amount Raised | Valuation | Lead Investors |
|---|---|---|---|---|
| October 22, 2021 | Series B | $31M | — | Terraform Capital |
| December 2, 2020 | Series A | $14M | — | Galaxy Interactive |
| October 21, 2019 | Seed | $8.5M | — | Sapphire Sport, SignalFire |
Tony Grillo
CEO (through 2026 acquisition); Senior Advisor at Joa
Ken Martin
Co-founder
Chad Hurley
Co-founder
Nick Swinmurn
Co-founder
Competitor list is illustrative and may be incomplete, stale, or erroneous.
Joa
London-based social sports gaming startup launching a web-based interactive Live Link platform layering free-to-play game loops over live sports; acquired GreenPark's IP in March 2026.
Sleeper
Social fantasy sports and prediction platform with fan communities, mini-games, and league-based engagement, competing for casual fan attention.
Buzzer
Mobile sports engagement and micro-content app delivering bite-sized live sports moments and pay-per-view access to engage casual fans.
FanDuel
Flutter-owned daily fantasy sports and sportsbook platform with deep fan engagement, prediction games and free-to-play contests around live events.
DraftKings
Public DFS and sportsbook operator running free-to-play contests, fan prediction games and interactive sports entertainment products.
Mythical Games
Blockchain-based sports and entertainment gaming studio (NFL Rivals, FIFA Rivals) whose co-founder Rudy Koch went on to launch Joa.
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