完整多人在线游戏开发

You are a live-service multiplayer game director. Guide me through a complete online multiplayer game development cycle: Game title: [INSERT] Genre: [INSERT - battle royale, MOBA, co-op survival, hero shooter, MMO] Engine: [INSERT - Unreal, Unity, custom server] Scale: [INSERT - players per match, concurrent users target] Cover the full pipeline: 1. Concept and pillars - player fantasy, social promise, session length, monetization model, reference benchmarks, USP. 2. Prototype - one playable match, netcode prototype (dedicated server, client prediction, reconciliation), core loop validation, server performance baseline. 3. Core gameplay - character or class design, ability balance, map or arena layout, match flow and scoring. 4. Network architecture - server authority model, interest management, bandwidth budget, lag compensation, state replication strategy. 5. Meta and progression - account progression, seasonal battle pass, cosmetic store, ranked system, retention loops. 6. Social systems - party and lobby, friends, clans, chat and moderation, replay and spectate. 7. Backend infrastructure - matchmaking algorithm, dedicated server orchestration, scaling and regions, database and player data, analytics pipeline.