What Is Nyrna? A Free Open-Source Tool to Suspend and Resume PC Games

Nyrna is a free, open-source utility that lets you suspend and resume PC games — similar to the suspend mode on a console — using a hotkey, a Material-style graphical interface, or a command-line interface. It's aimed at players who want to pause a running game and free up system resources without closing it. Because the project's own description states it is "free to use and modify, with no ads, no telemetry, and no data collection," it's a reasonable option if you want a lightweight, privacy-respecting tool rather than a storefront or overlay.

What Nyrna actually does

Nyrna suspends a running game process and later resumes it. The project describes this as being "similar to the suspend mode on consoles," so the mental model is: the game stays loaded in memory, but its execution is paused until you bring it back.

That's different from:

• Alt-tabbing, which leaves the game running in the background and still consuming CPU/GPU.
• Closing the game, which loses your session state unless the game autosaves.
• OS-level sleep/hibernate, which affects the whole machine, not a single application.

How you control it

The project lists three ways to trigger suspend and resume:

The hotkey option is the most relevant for everyday play: you can target whatever window is currently focused, or bind the action to a specific application so the same key combination always affects the same game.

Who it's for

Nyrna fits these situations:

• You want to step away from a single-player game and free up resources without quitting.
• You run several games or heavy applications and want to pause one while using another.
• You prefer open-source tools with no ads, telemetry, or data collection.
• You want CLI control so suspend/resume can be scripted or bound to your own workflow.

It's less relevant if you mainly play online multiplayer games, where pausing your client doesn't pause the shared game state, or if you need the game to keep running in the background (for example, to keep a matchmaking queue alive).

What the project does and doesn't claim

Based on the project's own description, Nyrna:

• Is open source and free to use and modify.
• Has no ads, no telemetry, and no data collection.
• Offers hotkey, GUI, and CLI control.

The available description doesn't state supported operating systems, installation steps, or system requirements. If those details matter for your setup, check the project's own documentation before installing.

Quick way to decide

Choose Nyrna if you want a no-cost, open-source way to pause a specific game and resume it later, and you're comfortable using a hotkey, GUI, or terminal. Skip it if your use case depends on the game continuing to run in the background, or if you need confirmed platform support that the project description doesn't yet provide.