Dr. Games tackles the unique complexity of the digital gaming market where 'products' aren't just static items.

They are dynamic services requiring specific user inputs (Player IDs, Region locks, Account Credentials) before purchase. The core challenge was building a backend that treats 'Manual Fulfillment' and 'API Automation' as interchangeable strategies.

The system allows admins to configure a game as 'Provider-based' (injecting API keys for services like Twelve.sa) or 'Manual' (routing to an admin queue). Crucially, it enforces a strict 'Pre-purchase Resolution' flow: users cannot proceed to checkout until they resolve all required credentials specific to their chosen items, ensuring 100% valid orders and reducing operational friction.

Built with Next.js SSR featuring advanced caching strategies using revalidate tags and path-based revalidation for optimal performance. Implemented multi-language support with high-performance server-side filtering and pagination, ensuring fast page loads across all locales.

Integrated Google OAuth 2.0 with refresh token rotation using Passport.js for secure, persistent authentication. The platform supports multi-currency transactions with real-time exchange rate conversion and localized pricing.

Additionally, it features a robust real-time support chat system for seamless communication between users and administrators during the fulfillment process.