I like the game, simple enough whilst also fun. Small issues with the editor. Can't delete single planets, cant save a level and can't get back to the rest of the game.
I can see where people got frustrated. I am not entirely sure how you are meant to solve 11 (I did it with 3 boxmen, but that was a little luck) A little short also.
 "Civiballs"){kind=icon}
 "3D Logic 2: Stronghold of Sage"){kind=icon}
 "Splitter"){kind=icon}
 "Continuity"){kind=icon}
 "Gravitee"){kind=icon}
 "Tactical Assassin 2"){kind=icon}
 "Use Boxmen"){kind=icon}
 "Red Remover"){kind=icon}
 "Little Wheel"){kind=icon}