What an utterly pointless, frustrating and ultimately annoying game this is! I'm a big fan of the tower-defense type games, and thought I'd give this a try. In essence, your units progress up the 'board' while the enemy units move down the screen towards you. When they are in opposing aisles, they can open fire on each other.
Now herein lies the most pointless aspect of the game. Start off and both you and the opposing team have EXACTLY the same three type of robots to build. Both you and the opposing team have EXACTLY the same upgrades to purchase. And both your own robots and those of the opposition move at EXACTLY the same speed (without unlock). So in a nutshell - it's a race to meet in the middle - at exactly the same time with exactly the same units with exactly the same kit. The result? A 51/49% split in success.
Granted, the game is much more fun with the appeal of upgrades and working out what works well and where - but its too long and boring to even get there!