The latest articles on DEV Community by zyc (@qq40446437). https://dev.to/qq40446437 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4033424%2F242eceda-77e6-4e3d-ac05-9209c04d7fa1.png https://dev.to/qq40446437 en zyc Fri, 17 Jul 2026 08:07:33 +0000 https://dev.to/qq40446437/how-i-built-a-trading-marketplace-for-350k-monopoly-go-players-332g https://dev.to/qq40446437/how-i-built-a-trading-marketplace-for-350k-monopoly-go-players-332g <p>Monopoly GO has over 350,000 active players trading stickers to complete their collections. The problem? Most of that trading happens through scattered Discord servers and Facebook groups — no verification, no trade history, no way to know if the person on the other end actually has what they claim.</p> <p>I wanted to fix that, so I built <strong>GoDices</strong>, a dedicated trading marketplace for Monopoly GO players.</p> <h2> The core problem </h2> <p>Sticker trading in mobile games is inherently a trust problem. Two strangers agree to trade digital items with no built-in enforcement mechanism from the game itself. The existing solutions (Discord channels, Facebook groups) weren't built for this — they're general-purpose chat tools being stretched to do something they were never designed for.</p> <h2> What I focused on </h2> <p><strong>1. Trust between strangers</strong><br> Since there's no way to verify a trade actually happened outside the game, I had to think about reputation systems, trade history, and ways to reduce the "ghosting" problem where one side just disappears mid-trade.</p> <p><strong>2. Keeping it simple</strong><br> Power traders will use anything. Casual players won't. The bigger challenge was designing something simple enough that someone who just wants to trade a couple of stickers doesn't bounce off a complicated interface.</p> <p><strong>3. Avoiding the same mess I was trying to solve</strong><br> A trading marketplace can easily become spam-filled itself if there's no moderation. I had to build in guardrails from day one instead of bolting them on later.</p> <h2> Where it's at now </h2> <p>GoDices is live at <a href="https://godices.com" rel="noopener noreferrer">godices.com</a>. It's still early and actively evolving based on feedback from the community.</p> <p>If you've built anything in the trust/marketplace space — trading platforms, P2P exchanges, anything where two strangers need to transact without a middleman — I'd love to hear how you approached fraud prevention and trust signals. That's been the hardest part of this by far.</p> showdev sideprojects softwaredevelopment webdev