# Darrel S. > Architect of a $3B Game Franchise | Product & Systems Designer | Founder @ Bubble Tea Games Location: San Francisco Bay Area, United States Profile: https://flows.cv/darrels ## Work Experience ### Founder & Principal Game Designer @ Bubble Tea Games Jan 2024 – Present | Millbrae, California, United States Founder of Bubble Tea Games, a studio specializing in the design and creation of bespoke, narrative-driven interactive experiences. We are dedicated to crafting unique games that blend compelling storytelling, high-quality physical components, and innovative gameplay. ### Strategic Consultant @ ZTX Jan 2024 – Present | Remote • Provided strategic consultation on the core game loop and systems design, leveraging expertise in casual game mechanics and hero collection. • Advised on progression loops and economy systems, guiding the team toward early engagement and long-term retention goals. • Contributed high-level strategic direction to a cross-functional team, focused on achieving key milestones and market traction. ### Lead Product Manager, Economy @ Scopely Jan 2022 – Jan 2024 | Remote • Led core economy and progression system design for Monopoly Go!, helping it reach #1 top-grossing with $5B+ revenue • Designed and tuned cooperative gameplay systems that drove virality and engagement • Identified cheaters and economic leaks, improving system integrity and long-term retention • Partnered with analytics to define player pacing, monetization loops, and reward frameworks ### Senior Game Designer @ Nifty Games Jan 2021 – Jan 2022 | Remote • Modeled player progression, game economies, and costs based on engagement and win rates • Designed new gameplay systems for NFL Clash that leveraged player attributes to replicate real-life outcomes ### Product Manager @ NCSOFT Jan 2018 – Jan 2019 • Managed a data analyst to build analytics dashboards, providing key insights into hero utilization, economy flows, and event progression. • Designed and developed monetization strategies and new PvP game modes that significantly enhanced player engagement. ### Sr. Product Manager, Head of Design @ Linekong Interactive Group Jan 2016 – Jan 2018 | Burlingame, CA • Led a 25-person cross-functional team across engineering, art, and QA to successfully launch a mobile eSports title. • Co-designed a mobile-first eSports game, "Supercharged: World Cup," that achieved over 10 million organic downloads. • Improved player retention by using SQL and MongoDB queries to identify and address drop-off points in the player journey. ### Director of Product, Analytics @ VULCUN Jan 2015 – Jan 2016 | San Francisco • Implemented the Sisense Data Analytics Platform to build customer lifetime value (LTV) models by channel and cohort. • Quantified streamer impact on a CS:GO business, which optimized marketing return on investment. • Designed a prototype for a real-time, audience-driven game on Twitch. ### Monetization Manager @ Warner Bros. Entertainment Group of Companies Jan 2013 – Jan 2015 | San Francisco • Drove 50% of hard currency usage in "Injustice: Gods Among Us" and "WWE Immortals" through new content bundles. • Analyzed and optimized player progression to enhance retention and LTV across multiple mobile titles. ### Game Designer @ MZ Jan 2010 – Jan 2013 | Palo Alto, CA • Architected and managed all gameplay systems for Game of War: Fire Age and Mobile Strike, contributing to $3.7 billion in revenue. • Designed and executed industry-leading in-app sales promotions that propelled both games to the top of the grossing charts. • Developed sophisticated game economies that improved the first-time user experience and fostered positive feedback loops between paying and non-paying players. ## Education ### BS in Chemistry University of California, Berkeley ### Master of Business Administration - MBA Santa Clara University ## Contact & Social - LinkedIn: https://linkedin.com/in/darrelsin --- Source: https://flows.cv/darrels JSON Resume: https://flows.cv/darrels/resume.json Last updated: 2026-04-13