2.2
2019-12-30
Compatibility updates.
2.1
2017-07-03
Minor graphical enhancements.
2.0
2016-11-14
Recreated to more closely match the original version with the exception of including 3d views. New game engine using Unity3d.
1.4
2011-09-02
Fixes an issue where the score screen could become trapped in an infinite loop.
1.3
2011-08-09
Fixes the issue with Retina displays showing object buttons and menus in the wrong positions.
1.2
2011-07-22
minor bug fixes
1.1
2011-06-24
Bug related to arrows not displaying destroyed parts properly is now fixed.