Very nice concept of game, I enjoyed it a lot. You start with a small squad of tanks and vehicules and you follow the streets in a city deciding where to turn (your units are constantly moving, from which comes the analogy with the waves in tower defense games). You manage the order of your units (strong in front, moving the hurt ones in the back), build new vehicules and upgrade them as you get money be destroying the enemy "towers" on the way. You also have a commander that can move freely, go grab the loot, draw enemy fire from your units and have a lot of useful abilities. Very fun game in all. If you like the squad-based missions in RTS games, this is even better, in my opinion.
