diff --git a/pyproject.toml b/pyproject.toml
index 2614a8a..4900f0e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ dependencies = [
     "pyfirmata2>=2.5.0",
     "pyzmq>=26.2.0",
     "thorlabs-apt-device>=0.3.8",
+    "tomli-w>=1.0.0",
     "typer>=0.15.1",
 ]
 
diff --git a/src/pqnstack/app/api/main.py b/src/pqnstack/app/api/main.py
index 175e089..34ee765 100644
--- a/src/pqnstack/app/api/main.py
+++ b/src/pqnstack/app/api/main.py
@@ -3,6 +3,7 @@
 from pqnstack.app.api.routes import chsh
 from pqnstack.app.api.routes import coordination
 from pqnstack.app.api.routes import debug
+from pqnstack.app.api.routes import games
 from pqnstack.app.api.routes import qkd
 from pqnstack.app.api.routes import rng
 from pqnstack.app.api.routes import serial
@@ -16,3 +17,4 @@
 api_router.include_router(serial.router)
 api_router.include_router(coordination.router)
 api_router.include_router(debug.router)
+api_router.include_router(games.router)
diff --git a/src/pqnstack/app/api/routes/games.py b/src/pqnstack/app/api/routes/games.py
new file mode 100644
index 0000000..99f0322
--- /dev/null
+++ b/src/pqnstack/app/api/routes/games.py
@@ -0,0 +1,11 @@
+from fastapi import APIRouter
+
+from pqnstack.app.core.config import GamesAvailability
+from pqnstack.app.core.config import get_settings
+
+router = APIRouter(prefix="/games", tags=["games"])
+
+
+@router.get("/availability")
+def get_availability() -> GamesAvailability:
+    return get_settings().games_availability
diff --git a/src/pqnstack/app/core/config.py b/src/pqnstack/app/core/config.py
index 0505b17..412bc19 100644
--- a/src/pqnstack/app/core/config.py
+++ b/src/pqnstack/app/core/config.py
@@ -43,6 +43,12 @@ class QKDSettings(BaseModel):
     measurement_config: MeasurementConfig = Field(default_factory=lambda: MeasurementConfig(integration_time_s=5))
 
 
+class GamesAvailability(BaseModel):
+    chsh: bool = True  # "Verify Quantum Link"
+    qf: bool = True  # "Quantum Fortune"
+    ssm: bool = True  # "Share a Secret Message"
+
+
 class Settings(BaseSettings):
     node_name: str = "node1"
     router_name: str = "router1"
@@ -54,6 +60,7 @@ class Settings(BaseSettings):
     timetagger: tuple[str, str] | None = None  # Name of the timetagger to use for the CHSH experiment.
     rotary_encoder_address: str = "/dev/ttyACM0"
     virtual_rotator: bool = False  # If True, use terminal input instead of hardware rotary encoder
+    games_availability: GamesAvailability = Field(default_factory=GamesAvailability)
 
     model_config = SettingsConfigDict(
         toml_file="./config.toml",
diff --git a/src/pqnstack/cli.py b/src/pqnstack/cli.py
index d2d7222..988a162 100644
--- a/src/pqnstack/cli.py
+++ b/src/pqnstack/cli.py
@@ -4,6 +4,7 @@
 from pathlib import Path
 from typing import Annotated
 
+import tomli_w
 import typer
 
 from pqnstack.base.errors import InvalidNetworkConfigurationError
@@ -184,5 +185,37 @@ def start_router(
     router.start()
 
 
+@app.command()
+def toggle_game(
+    games: Annotated[list[str], typer.Argument(help="Games to toggle: chsh, qf, ssm")],
+    enable: Annotated[bool, typer.Option("--enable/--disable", help="Enable or disable the games")] = True,  # noqa: FBT002
+    config: Annotated[str, typer.Option(help="Path to config.toml")] = "./config.toml",
+) -> None:
+    """
+    Enable or disable one or more games in config.toml.
+
+    Changes take effect on the next server restart. Games: chsh (Verify Quantum Link), qf (Quantum Fortune), ssm (Share a Secret Message).
+    """
+    valid_games = {"chsh", "qf", "ssm"}
+    invalid = [g for g in games if g not in valid_games]
+    if invalid:
+        msg = f"Game(s) must be one of: chsh, qf, ssm. Invalid: {invalid}"
+        raise InvalidNetworkConfigurationError(msg)
+
+    path = Path(config)
+    with path.open("rb") as f:
+        cfg = tomllib.load(f)
+
+    cfg.setdefault("games_availability", {})
+    for game in games:
+        cfg["games_availability"][game] = enable
+
+    with path.open("wb") as f:
+        tomli_w.dump(cfg, f)
+
+    status = "enabled" if enable else "disabled"
+    logger.info("Games %s %s in %s. Restart the server for changes to take effect.", games, status, path)
+
+
 if __name__ == "__main__":
     app()
diff --git a/uv.lock b/uv.lock
index 403bd66..8f7b208 100644
--- a/uv.lock
+++ b/uv.lock
@@ -733,6 +733,7 @@ dependencies = [
     { name = "pyfirmata2" },
     { name = "pyzmq" },
     { name = "thorlabs-apt-device" },
+    { name = "tomli-w" },
     { name = "typer" },
 ]
 
@@ -761,6 +762,7 @@ requires-dist = [
     { name = "pyfirmata2", specifier = ">=2.5.0" },
     { name = "pyzmq", specifier = ">=26.2.0" },
     { name = "thorlabs-apt-device", specifier = ">=0.3.8" },
+    { name = "tomli-w", specifier = ">=1.0.0" },
     { name = "typer", specifier = ">=0.15.1" },
 ]
 provides-extras = ["webapp"]
@@ -1230,6 +1232,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/cc/38/60afff0deb2379c5feae251a5da9e9773c6ac8e2f09fbdac8d2980e28aa2/thorlabs_apt_device-0.3.8-py3-none-any.whl", hash = "sha256:84897581dc99e6f1ab774f07f9466d9137c94ac3dfa0fa59cdd305a4c9682872", size = 64631, upload-time = "2024-03-09T09:39:16.829Z" },
 ]
 
+[[package]]
+name = "tomli-w"
+version = "1.2.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/19/75/241269d1da26b624c0d5e110e8149093c759b7a286138f4efd61a60e75fe/tomli_w-1.2.0.tar.gz", hash = "sha256:2dd14fac5a47c27be9cd4c976af5a12d87fb1f0b4512f81d69cce3b35ae25021", size = 7184, upload-time = "2025-01-15T12:07:24.262Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/c7/18/c86eb8e0202e32dd3df50d43d7ff9854f8e0603945ff398974c1d91ac1ef/tomli_w-1.2.0-py3-none-any.whl", hash = "sha256:188306098d013b691fcadc011abd66727d3c414c571bb01b1a174ba8c983cf90", size = 6675, upload-time = "2025-01-15T12:07:22.074Z" },
+]
+
 [[package]]
 name = "typer"
 version = "0.20.0"