3D Blox Neat puzzle game.
Reminds me of Lode Runner 2. 
  (3Dblox).

http://www.javaonthebrain.com/java/3dblox/
http://www.javaonthebrain.com/java/3dblox/blox.class
http://games.s3n.com/playroom/3dblox/index.htm