This document discusses the importance of player-centered market research and analytics for game developers. It recommends gathering both qualitative and quantitative data from early concepts through launch in order to understand the target audience, validate assumptions about player segments, and identify opportunities and risks. Key steps include collecting feedback from panels, focus groups, and soft launches to analyze results; then using analytics from MVP releases and beyond to monitor funnel performance, identify the target market, and inform marketing strategy and asset creation prior to full launch. The main takeaway is the importance of building plans based on user data rather than demographics in order to find players and focus on what really engages them.