In case you can't tell from the picture above, the galaxy is on fire. Why is the galaxy on fire, you ask? Because of all the heat generated by this awesome sale! That's right, you can nab Galaxy on Fire 2 HD today for free! It's the best 3D space combat game on iOS by far and it normally would set you back between five and seven bucks! You have to take advantage of this great sale and get yourself a copy of Galaxy on Fire 2 HD -- today's Free App of the Day!