The Bot Squad, by Ubisoft, is a free-to-play strategy game that mixes puzzles with tower defense.
Players control robots as they pick their way through Dynamo City's trapped areas, searching for orbs. Beware though, because other robots want those orbs! So players will also have to defend their stockpiles from waves of invading robot forces with defensive units. The game will have 180 stages to complete and dozens of robots to manage. Ubisoft says that they will have regular free content updates that include new stages, units, and modes.
You'll be able to check out The Bot Squad on October 16 in the App Store.