MutherOS is not a VTT. It is a diegetic session control system for running time, systems, and pressure — live and inside the fiction.
The In-Game Universal Time (IGUT) clock is always running.
No vague time skips. No mental math. No GM “fudging.”
Timers, resources, and failures all reference the same persistent clock—because in survival horror, time is the enemy. When the clock is visible, every decision carries weight.
Most RPG tables stop at a result.
MutherOS tables change the game state.
The Table Builder lets you design structured, reusable tables that don’t just generate flavor. They drive the session forward.
Tables stop being notes. They become live mechanics.
Create fully simulated in-game Networks with custom locations and devices. Generate functional, interactive terminal screens that can be shared with players.
Your Prep Compounds Over Time
Use them as-is, customize them, or chain them into your own systems.
Your prep doesn't reset every session—
it accumulates.
Traditional VTTs simulate a table. MutherOS simulates the world.
Where others focus on grids and tokens, we enhance the theater of the mind.
MutherOS doesn’t replace storytelling.
It removes everything that breaks it.
Start free. Unlock cloud sync and multiplayer with Command Link.
MutherOS is completely system-agnostic. It works with Mothership, Alien RPG, Traveller, Death in Space, or any sci-fi RPG where time pressure and terminal interaction matter.
No coding required. The dashboard is designed for GMs, not programmers. Point, click, and run your session. Terminal commands are pre-built for players.
Yes! Player terminals are fully responsive. Players just need the session code and a browser. Works on phones, tablets, and computers.
Yes! The Free Account gives you full access to the GM dashboard with local storage, terminal themes, table builder, and more. Sign up to browse the Systems Library and join sessions as a player. Command Link unlocks cloud sync and multiplayer.
MutherOS is not a VTT. We don't do maps, minis, or grid combat. We focus on what VTTs ignore: time pressure, terminal interaction, and narrative systems. Use us alongside your existing tools.
181 pre-built assets including dice-roll tables, reference tables, loadout generators, hardware types, and network blueprints. Use them as-is, customize them, or chain them into your own systems.
No credit card is required to start your 7-day free trial. You'll only be asked for payment information when you decide to continue with a paid subscription after experiencing all the features.
After your 7-day free trial ends, you'll be automatically charged for your selected plan (monthly or annual). You'll continue to have full access to all Command Link features. If you don't want to continue, you can cancel anytime before the trial ends and you won't be charged.
Yes! You can switch between monthly and annual billing at any time from your account settings. If you switch from monthly to annual, you'll receive prorated credit for any unused time. Annual billing saves you 17% compared to monthly.
You can cancel your subscription anytime from the Customer Portal (accessible from your account settings). When you cancel, you'll retain access to Command Link features until the end of your current billing period. Your data will remain saved, and you can resubscribe at any time.
Have questions or feedback? We'd love to hear from you!