I finally made it and finished recovering The Europa Arcology Incident. The game is done by Markus Persson Notch, you have the original readme from him in the folder. I will not upload the source, i didn't spot any source from notch and im not sure if he did back then.
Also you have the original jar here, it was the applet one, no way it works on modern browsers ;)
-Game ported from Applet to runnable java game with fixes
-The game originally has no sound.
-This game is Turn based! "You play with input keyboard turns"
-The game is quite hard! "And fun!"
-Execute the .jar file as Java Application.
-Read the instructions during the game with "?" key.
-Level up to reach new levels and increase your stats while you fight creatures.