Judging from the last comment you would think this game hard. However i beat it in one go, took about 20 min. Very solid game. lvl 15 was my favorite because of the distance to each cell. If you make another you should think about adding levels with greater distances. Make it harder, more strategic.
 "Days 2 Die"){kind=icon}
 "Super Stacker"){kind=icon}
 "Gravitex"){kind=icon}
 "StarBaron"){kind=icon}
 "Nano War"){kind=icon}