eceo by Adem KAYIRCI FREE

eceo comes from Adem KAYIRCI.  The object is to get all the switches to be either on or off.  Each individual switch has its own controls.  

Look at the third image.  The switch on the upper left may control the entire row.  The switch on the bottom left my control a diagonal.

These puzzles can get pretty difficult.

There are 100 levels. I've solved about 40 of them.

Below is a list of other games from Adem.  My favorite of the bunch is cohex.
https://itunes.apple.com/us/app/eceo/id1451039042?mt=8

Adem's other puzzles
turn,
maze cube
cohex
-look-
block dock!