SIAc: Core Companion Mod SIAc is a specialized technical modification developed exclusively for the SIA2: Rivalation server infrastructure. It acts as a bridge between the player's client and the server's unique gameplay systems.
⚠️ Important Notice This mod is strictly intended for players of the SIA2: Rivalation server. It relies on a private server-side plugin to function. Without this specific environment, the mod provides no features and has no impact on your game in single-player or on other servers.
Key Features:
-Media Synchronization: Allows the server to stream and synchronize visual media content directly to the player's screen for enhanced atmospheric immersion.
-Security & Integrity: Includes a built-in module for verifying installed client-side modifications to ensure a fair play environment and prevent cheating.
-Server-Side Integration: Provides essential hooks for custom server scripts, story-related triggers, and advanced gameplay mechanics.
-Performance Stability: Optimized to handle specialized network packets between the client and the SIA2 server plugin without affecting FPS.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.6
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as SIAc-Fabric-4.1.4.jar — drop this file into the mods folder
- Download size: 1.9 MB
- Download link checked 23 Aug 2026 — working
These come from our own check of the pack file, not from the source page.