it's a java game, so you need to have java installed and then you just double click the file
i found out you need to right click the .rar file and chose to run with java, then it asked me to create a save and as soon as i do it crashes
If you don't have the .jar file associated with java, you could also create a simple batch file (for e.g. run.bat) with the following content:java -jar SolarColony.jar
the run.bat worked, thanks
not for me