I need a seasoned game developer to add an earn-and-spend “game coin” economy to my existing, custom-built mini-game site—and I’m open to the best route you advise. We can either design a bespoke virtual currency system from scratch or integrate an off-the-shelf game that already supports in-game purchases, then tailor it to fit seamlessly into my platform. Key goals • Players earn coins through play or buy packs through a payment gateway. • Coins are deducted instantly when they spend inside any game. • Admin tools let me adjust balances, track transactions, and view basic analytics. Because the site is custom-built, you’re free to choose the right stack, whether that means extending my current backend or dropping in a lightweight microservice that handles wallet logic via secure APIs. Familiarity with payment providers (Stripe, PayPal, crypto, etc.) and popular HTML5 mini-game engines such as Phaser or Cocos2d will help us move fast. Turnaround is tight—I’d like a working, testable integration in under a week. If you’ve shipped monetization features before, tell me about it when you apply; I’m choosing based on proven experience rather than lengthy proposals. When we wrap up, I’ll consider the job complete once: 1. The coin balance flows (earn, purchase, spend) work end-to-end on my staging server. 2. The admin interface updates balances and exports a simple CSV of transactions. 3. At least one mini-game demonstrates the spend mechanic without hiccups. Looking forward to collaborating and getting this economy live quickly.