The Java Universal Role Playing Engine (http://jurpe.sourceforge.net)
Jurpe source code needs JDK 1.7 and Maven to be built.
Get JDK from: http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html
Get Maven from: http://maven.apache.org/download.cgi
When installed, type: mvn clean install