How to save data for a specific game?

[Thalassicus]

How can I save data for a specific game? I tried this:

saveDB = Modding.OpenSaveData()
if saveDB.GetValue("CheckSomeValue") then
  print("Load")
else
  print("Start")
  saveDB.SetValue("CheckSomeValue", true)
end

I then did this:

1. Start a new game.
2. Exit to main menu.
3. Start a new game.

The output in LiveTuner was:

Start
...
Load

I figure I need to concatenate some unique identifier to the variable to ensure it's only associated with a specific game...