Yes it’s only the one kind of lock (a group-2 style safe lock), although it can be modified for difficulty. I have thought of adding other safe/dial lock types but for the time being I have no plans to add anything else. Ultimately I’m limiting myself to keep the scope of the project small, and also fun - it might be fun for me to simulate manipulation resistant locks but it would not be fun to try and crack them (afaik many can’t be cracked without drilling!).
Other styles of locks may be possible for me to simulate, but I know less about them so I’d need to do research to know if I could simulate them well and make them fun to overcome.