The version in the main folder is compatible to JAVA 1.1.8 and JAVA 1.8 and uses a deprecated JAVA API. You can find a JAVA 1.1.8 applet and versions for Swing in the subfolders. The Swing versions don't use a deprecated JAVA API.
This is a StrangeWorld3D version for two players. Both players must collect the key and enter the door in this 3D game. The player, who collects the key first, leaves a copy for the other player. You can also collect objects and balls to get points. There are objects, which make you lose points. You loose points every second. Other objects make you loose lifes. You must enter the door without loosing three lifes. The players play together. You get the point number after both players have reached the door and then the level is completed. Player 1 uses the cursor keys and delete to switch to the camera mode. Player 2 uses the keys s, y, x, c and a to switch to the camera mode. Use ESC to quit a level.