If you're having trouble running the game, you can try what I did:
- Copy the zombieman.jar and rename it to zombieman.zip
- Unzip zombieman.zip and move the contents into a folder called 'resources'
- Create a folder called 'main' and move the 'resources' folder into it.
- Create a folder called 'src' and move the 'main' folder into it.
Your directory structure should look like this:
- zombieman.jar
- src\
- main\
- resources\
- contents of zombieman.zip
- resources\
- main\
Then run 'java -jar zombieman.jar' from the main directory, or create a ZOM.BAT that runs 'java -jar zombieman.jar' and run that.