Look for processes running on your machine. If you don't see any suspicious process except the game itself (and the game's process or or processes are running o

Look for processes running on your machine. If you don't see any suspicious process except the game itself (and the game's process or or processes are running only while you're playing) then only the game itself could be logging your keystrokes. Which means that, if while the game is running you don't type sensitive information, you're safe.