CDNs help online gamers reduce lag by distributing game content through global servers. Gamers need low latency for competitive play, faster downloads, and multiplayer sync. Key CDN features for gaming include server coverage, Anycast routing, WAF/DDoS protection, real-time analytics, and support for UDP/WebSockets. Top providers are Cloudflare, Akamai, Amazon CloudFront, Fastly, and StackPath. Implementation involves selecting the right provider, integrating with game servers, optimizing caching, and monitoring performance. Challenges like high costs or dynamic content can be addressed with hybrid solutions or edge computing. As gaming evolves, CDNs will support cloud gaming, metaverse, and AI-driven optimizations.