This tutorial guides you through building a Next.js Pokédex using the PokeAPI, with an interactive game hidden behind a feature flag controlled by LaunchDarkly. The project uses Next.js, TypeScript, Vercel, and LaunchDarkly's JavaScript Client SDK for feature-flagging. The frontend design is inspired by Emmanuel Tabarez's Pokédex CSS grid on Codepen. The game tests players' knowledge of Pokémon types in quiz mode or displays random Pokémon images in random mode.