Epic Online Services vs Idem

Epic Online Services is a suite of modular online services for game developers. Its service areas cover accounts and social features, multiplayer, player and game data, and trust and safety. Social capabilities include crossplay, friends, presence, overlay, and the Epic Games account ecosystem. Multiplayer tools include peer-to-peer features, sessions, lobbies, and voice chat. Developers can use leaderboards, stats, achievements, and storage for player and title data. Trust and safety services include Easy Anti-Cheat, sanctions, player reports, and Kids Web Services. The services can be used with Unreal Engine, Unity, or a developer's chosen engine. SDKs are available for PC in C or C#, Android, and iOS; console SDKs require a request through the Developer Portal. Epic describes the service as free to use, with no royalty or hosting fees, though usage restrictions may apply. Epic says it processes game-service data to operate the services and does not share partner data without explicit authorization. Use may be throttled or suspended for violations of service restrictions.

Idem is a matchmaking service for multiplayer games, available through a managed cloud service or self-hosted deployment. It matches players using skill or rating, game mode, team size, parties, roles or factions, latency, geography, and custom criteria. PvPvP formats can use any number of players per team and teams per match. Pre-arranged parties are supported, and players who leave can be replaced. The system considers ping, suggests a suitable server location, and supports server allocation. Its rating engine applies Bayesian updates similar to TrueSkill or Glicko II. Queue-liquidity analytics forecast how larger modes or ping limits may affect queue availability. Integrations cover hosting, game backends, REST, WebSocket, Unity, Unreal, Beamable, and Pragma/Kotlin. The free self-hosted Community Edition is Open Match compatible and offers basic algorithm selection. Advanced commercial matchmaking is available for more complex needs. Self-hosted deployment runs as a stateless container in customer infrastructure.