Keep co-op worlds alive, even when the host is offline

Keep co-op worlds alive, even when the host is offline. SaveSync is a save syncing, backup, and sharing tool built for co-op games. Seamlessly transfer save files between friends. No more manual copy-pasting or paying for dedicated servers.

Supported Games

Currently supporting 25 popular co-op games

Schedule I co-op gameplay - Save sync compatible
Schedule I
Stardew Valley co-op gameplay - Save sync compatible
Stardew Valley
Minecraft: Java Edition co-op gameplay - Save sync compatible
Minecraft: Java Edition
Satisfactory co-op gameplay - Save sync compatible
Satisfactory
Prism Launcher co-op gameplay - Save sync compatible
Prism Launcher
Minecraft: CurseForge co-op gameplay - Save sync compatible
Minecraft: CurseForge
Don't Starve Together co-op gameplay - Save sync compatible
Don't Starve Together
Enshrouded co-op gameplay - Save sync compatible
Enshrouded
Vintage Story co-op gameplay - Save sync compatible
Vintage Story
Project Zomboid co-op gameplay - Save sync compatible
Project Zomboid
The Planet Crafter co-op gameplay - Save sync compatible
The Planet Crafter
Abiotic Factor co-op gameplay - Save sync compatible
Abiotic Factor
tModLoader co-op gameplay - Save sync compatible
tModLoader
StarRupture co-op gameplay - Save sync compatible
StarRupture
Alchemy Factory co-op gameplay - Save sync compatible
Alchemy Factory

Request a Game

Want to see your favorite co-op game supported? Join our Discord community to request new games and connect with other players!

Why SaveSync?

We built SaveSync after seeing how often players asked, "How can we keep playing our co-op world if the host isn't available?" The usual answers, setting up a paid dedicated server or manually transferring files, are either expensive or frustrating. SaveSync solves this with a simple, automated and affordable solution.

Key Features

Everything you need to keep your co-op worlds alive

Cloud Save
The saves you choose are stored on Steam Workshop, encrypted, unlisted, and private by default.
Cross-User Syncing
Share your saves with your friends so anyone can keep hosting. Save files are scanned with Windows Defender before uploading and downloading, for an extra layer of safety.
Host Transfer Made Easy
The save's host changes automatically when activated.
Save Activation Control
Activate or deactivate specific saves to get around in-game save limits–great for games that restrict the number of save slots.
Complements Steam Cloud
Works alongside Steam Cloud without conflict. Save activation/deactivation and host changes reflect properly, even on unsupported platforms.
LAN Sync
Seamlessly play Minecraft and Vintage Story with your Lan friends
Available on Steam
Purchase SaveSync directly through Steam for automatic updates and Steam Cloud integration

Requires Steam account. One-time purchase includes lifetime updates.

Our Story

SaveSync started with a simple frustration. AG and KB used to play Schedule 1 together. KB was the host. One day, AG was sick at home while KB was stuck at work. AG wanted to play, but couldn't. The save lived on the host's machine, and without the host, the game simply couldn't continue.

We looked for solutions. The options were bad: manually moving save files back and forth, or setting up dedicated servers that required subscriptions and constant maintenance. So we decided to fix it, first for ourselves.

As we started working on a solution, we realized we weren't alone. Players across many different co-op games were asking the same question: "How do we keep playing when the host is offline?" That's how SaveSync was born.

While adding support for Minecraft Java, we ran into another problem. Multiplayer without a Steam-like network was messy, especially for LAN-style co-op. So we built LAN Sync, a VPN-like system that works over the Steam network, making local co-op feel seamless even when players are far apart.

We're both game developers, working on SaveSync part-time, building the low-level systems, the UI, the guides, and the community, because we genuinely care about co-op games. Our goal is simple: To make co-op gaming better, no file juggling, no forced subscriptions, no barriers. Just play.

Join Our Discord Community

Connect with fellow gamers, get real-time support, and stay updated with SaveSync