If you love facing tricky situations and solving challenges, 'Lights On and Off' is the game for you. It is 1 of the top games in terms of offering difficulty and challenge to the users.
This awesome game has not just 1, but 2 mode. A 5x5 mode and a 6x6 mode.

How to Play:
Select any of 2 mode either 5x5 or 6x6.
In all the levels (initially) , all lights have random color (either green or orange).
Tapping a light , changes color of tapped light and of all lights which are in same row or same column as that of tapped light. 
The target is to switch all the lights to same color (green or orange). 
This is to be achieved in minimum number of Turns.

So , get to the top of the your game and keep on tapping the lights on and off and on and off and on and off , until you get all orange lights or all green lights.

'Lights On and Off' has 60 levels.You get a maximum of 1000 points for every level.
Solve all the levels as quickly as possible, improve your rank in leaderboard and be the top scorer.