Benjamin Schieder:

package/blindcoder/gfingerpoken/gfingerpoken.desc

@@ -25,6 +25,9 @@
 
 [T] GFingerPoken is a BlackBox-type game for GTK 1.2 or higher. It was
 [T] heavily inspired by Marble, an old MS Windows shareware game.
+[T] At the start of the game a random gamefield is created but not shown to
+[T] you. You have to recreate that field by rolling marbles over it and see
+[T] how they bounce off from obstacles on the invisible field.
 
 [U] http://gfpoken.bigw.org/