Hi guys, I've come with a promising gist.
There is this new website that says you can play a game of snake online in their website and the top players earn rewards like cashs or recharge cards. The game is very simple so I don't think the reward is kinda big.
But its a way to earn by playing i think.
Goto: www.hit16.tk and then click games on the users homepage(You have to be registered to visit their users homepage), in the next page you will find SNAKE click it and enter the game arena.
I have played it with a computer and a blackberry bold 5, dont really know if it works on other phones anyway,
try it and see.