A free program for Android, by Words Mobile.

Build the perfect robot and watch it compete with another killer machine. That is the objective of this android game. Robot Crash Fight is a perfect boredom killer for people who love to create and destroy.

This exciting game combines robot design, construction, and combat. Once both teams have created their killer machines, they will have them fight in a battlefield. Whichever robot remains standing or has the least amount of damage at the end of a round, wins. 

So to be the victor, you will have to carefully design your champion and remember that all of its strengths and weaknesses will be credited to you.