In this game fire (you) has taken over an area and is trying to keep it ablaze. Water is trying to put you out and you need to gather earth to stay burning. The higher your earth score the longer your fire will burn if you avoid the water.
You are the red fire character. You have got to avoid the blue water characters and collect the green earth characters. The number in the top right corner is how many earths you have gathered and the hearts in the left hand corner are how many lives you have left. Move your red fire character using the arows.