Experiment without consequences
Try anything. Break anything. Roll back instantly.
Windows only. Free during beta.
Modding is risky business
You know how this story goes.
Friday evening
You find the mod
200 hours in. A total overhaul mod catches your eye. New combat, new quests. You hit install.
Saturday morning
Something breaks
Game loads, but your inventory is gone. NPCs freeze. Script conflict somewhere. You disable a few mods. It gets worse.
Saturday afternoon
You check for backups
Last manual backup: three weeks ago. Autosaves already overwritten. 200 hours. Gone.
With Tachyon
Switch back. 200 hours intact. Thirty seconds.
Mod with confidence
The safety net every modder needs.
Named Timelines
One timeline per mod setup. "Vanilla," "Requiem," "Texture Pack." Switch with one click.
Instant Rollback
Every save timestamped and preserved. Restore any snapshot in seconds.
Auto Snapshots
Saves captured in the background. Forgot to backup before installing? Still covered.
Modlist Isolation
Timelines are independent. A broken experiment can never touch your stable playthrough.
The safe modding workflow
Three steps. No risk.
Create a timeline
Add a new timeline. Name it "Requiem Test" or whatever you like. Your current saves stay safe on the original.
Auto-snapshots run in the background, so you can still roll back even if you skip this step.
Install and play
Add your mods, launch the game. Tachyon keeps snapshotting automatically on the new timeline.
Every snapshot is timestamped and tagged with the device that created it.
Keep or revert
Mods work? Keep playing. Something broke? Switch back. Your stable playthrough is exactly where you left it.
Maintain as many timelines as you want. Vanilla, lightly modded, heavily modded, all coexisting.
Create a timeline
Add a new timeline. Name it "Requiem Test" or whatever you like. Your current saves stay safe on the original.
Auto-snapshots run in the background, so you can still roll back even if you skip this step.
Install and play
Add your mods, launch the game. Tachyon keeps snapshotting automatically on the new timeline.
Every snapshot is timestamped and tagged with the device that created it.
Keep or revert
Mods work? Keep playing. Something broke? Switch back. Your stable playthrough is exactly where you left it.
Maintain as many timelines as you want. Vanilla, lightly modded, heavily modded, all coexisting.
Real-world scenarios
In the games you actually play.
The Overhaul Experiment
Requiem changes everything. Might not be for you.
Create a "Requiem" timeline, play for a few hours. Not your style? Switch back. Vanilla playthrough untouched.
The Script Conflict
Mod update causes script conflicts. Game loads, but it's broken.
Find your last good snapshot, restore it. Wait for the patch or swap the mod out.
The Parallel Playthroughs
Vanilla co-op with friends. Heavily modded solo farm. Both.
Two timelines. Switch in Tachyon before launching. No file juggling.
Works with your favorite moddable games
Auto-detected saves for 5000+ titles. A few favorites:
Skyrim
Fallout 4
Stardew Valley
RimWorld
Baldur's Gate 3
Cyberpunk 2077
The Witcher 3
Monster Hunter: World
Ready to mod fearlessly?
Stop gambling with your saves.
Download Free BetaWindows only. Free during beta.