-The native Emerald mine engine was derived from Emerald Mine for X11
-which was developed by David Tritscher as a very compatible Emerald Mine clone.
-Thanks a lot for this contribution!
+The native Boulder Dash engine was derived from GDash, which was developed by
+Czirkos Zoltan as a highly compatible Boulder Dash clone. Thanks a lot for this
+contribution!
+
+The native Emerald mine engine was derived from Emerald Mine for X11, which was
+developed by David Tritscher as a very compatible Emerald Mine clone. Thanks a
+lot for this contribution!