Seamless - Serverless Multiplayer

 [](https://www.curseforge.com/minecraft/mc-mods/seamless) [](https://modrinth.com/mod/seamless) [](https://fabricmc.net/) [](https://neoforged.net/) # Seamless - Play Together, Effortlessly **Tired of complicated server setups?** Seamless transforms multiplayer gaming by eliminating the technical headaches. No port forwarding nightmares, no router configuration struggles – just pure gaming fun with your friends! ## What Makes Seamless Special? Seamless revolutionizes how you play Minecraft with friends by bringing server hosting **directly into your game**. Using cutting-edge P2P technology, it automatically establishes connections between players, even when both are behind NAT or firewalls. Say goodbye to technical barriers and hello to instant multiplayer! ## Key Features ### One-Click Server Hosting Launch a multiplayer server **directly from Minecraft** – no separate server software, no console commands, no complexity. Just click "Host Server" and you're ready to play! ### Automatic Port Forwarding Forget about router configuration! Seamless automatically handles port forwarding using UPnP technology. If automatic setup isn't possible, you'll get clear, easy-to-follow instructions. ### Smart Invite System Share a simple **6-digit code** instead of complicated IP addresses. Your friends can join in seconds by entering the code – it's that simple! ### Integrated Friend Management *(Coming Soon)* Manage your friends directly in-game with real-time status updates and persistent friend lists. ### Advanced P2P Connections Modern networking technology that works even behind NAT and firewalls. Direct peer-to-peer connections with automatic fallback to relay servers if needed. ### Mod Compatibility Checker Never join an incompatible server again! - **Automatic mod detection** on host and client - **Pre-join compatibility checks** – see warnings before connecting - **Prevent crashes** caused by mod mismatches - **Clear mod requirement lists** for easy troubleshooting ### Real-Time Session Management - **Live player counts** and session status - **Automatic session cleanup** after 1 hour of inactivity - **Session restoration** – rejoin seamlessly after disconnects ### Cross-Platform Support **Works with both Fabric AND NeoForge** – same great features, same smooth experience, your choice of mod loader! ## Quick Start Guide ### Hosting Your First Server 1. Open the game menu 2. Click **"Server"** 3. Hit **"Start Server"** 4. Share your **invite code** or server address with friends 5. Start playing together! 🎉 ### Joining a Friend's Server Currently, joining works via **6-digit invite codes**: 1. Get the code from your friend hosting the server 2. Open the join menu in Seamless 3. Enter the 6-digit code 4. Connect instantly! *Note: The friend list feature is currently in development. For now, use invite codes to join servers.* ## 🔧 Technical Details Network Architecture - Standard Minecraft protocols with automatic port detection - Multi-tier connection strategy (direct → hole-punch → relay) - RFC 5389-compliant STUN client implementation P2P Technology - STUN servers for NAT traversal - UDP hole punching for firewall bypass - TCP-over-UDP tunneling with automatic fallback Data Storage - Friend lists: `config/seamless/friends.json` - Server settings: Local configuration files ## Community & Support Need help? Have suggestions? Found a bug? - **Report issues** on [CurseForge](https://www.curseforge.com/minecraft/mc-mods/seamless) - **Leave comments** on CurseForge – i read every message! - **Share your experience** – help me improve Seamless ## Currently in Development The following items reflect the current direction of development. These are planned features, not guarantees. Stability comes first. Core improvements - In-game friends menu - Inviting friends directly without links - Minimal UI with no social features - No accounts, cosmetics, shops, or external services - Calm behavior without spam notifications - Focus on hosting and joining only Multiplayer and co-op features - Basic multiplayer commands - Host-only permissions - Session-based commands like kick, invite, and lock session - Clear host indication - Better session lifecycle handling - Optimized for small groups - Target: stable sessions with up to 8 players Mod and Voice support - Improved modpack compatibility - Support for common mod setups - Simple Voice Chat compatibility Versions Planned support for additional versions: - 1.21.4 - 1.21 - 1.20.4 - 1.20.1 - 1.19.2 - 1.12.2 - 1.7.10 The focus is on supporting the most important versions first, with others coming later. ## Modpacks Seamless is explicitly allowed to be used in modpacks. If you want to include Seamless in a public or private modpack, feel free to do so. The only requirement is that all players in a session use the same mod setup. If you run into issues, incompatibilities, or edge cases while integrating Seamless into a modpack, modpack creators are very welcome to reach out. Feedback from modpack authors is appreciated and helps improve compatibility. ## License All rights reserved. ## Credits **Developed with ❤️ by Ecentrix** Special thanks to the Minecraft modding community and everyone who contributes to making multiplayer gaming more accessible! ### Ready to play without limits? **Download Seamless today and experience multiplayer the way it should be!** *No technical knowledge required – just install and play.*