You can use os.execute() function (just google Lua & os functions for examples) to launch something else. os.exit() to close the game. But why would you want to do that? I don't think anyone would appreciate your game randomly closing the game & randomly launching another application without warning.
Just as a quick example to show that os.execute works. I have created a new text file on my desktop called "hello_world.txt".
I ran this code via atom text editor with the code type set to Lua.
local dir = os.getenv("userprofile") .. "\\Desktop\\"
os.execute(dir .. "hello_world.txt")
It immediately popped open the txt file, but again. I really don't think it's a good idea forcing a new app to be opened up as it looks messy & will likely not be appreciated by the player.
Quick note: accessing anything that is not in your games root directory or a sub-folder in your games root directory is not very simple.
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