Try extracting the files to My Documents and running ShopSim.exe.
A member registered Jan 08, 2017
Recent community posts
.jar files are java's file package format. You run the entire .jar file, not any specific file inside it.
Just right click on the MyLittleSaveGameFixer-0.0.81.jar file and select Open With. Then select Java(TM) Platform SE Binary.
Here's a picture.
My Little Blacksmith Shop community · Posted in Mining 1.0 (A Blacksmith's Guide to Never Sleeping)