An Important Note About Passwords
If you want to password protect your game to prevent others from altering it, you can do so in the General Game Data menu. A password is never required to play a game, only to edit it. However, the protection provided by this password is VERY weak. This is security through obscurity, which is the worst kind of security. I do not keep a password on my own game, Wandering Hamster, and I suggest you avoid this feature also, as the security it provides is an illusion.