Origin8 has Robot Rampage (iTunes Link) in the iTunes App Store for FREE for a limited time.

The invasion has arrived, and YOU are the invader. YOU are the atomic robot from the stars – YOU are bringing destruction to planet Earth!

Your devastating armored robot is on a mission to tear the city apart! Flatten each and every city block with your feet, fists and mighty weaponry! The military will try to stop you, but their primitive troops, tanks and aircraft will prove no match for YOU… or will they?