This videogame is more about the entertainment of battle spectacle and playing with toy soldiers than about either action or strategy. Experiment in Practice mode to get an idea of what's going on, then play around in Sandbox mode (or face off against a friend) to pit various army combinations against one another to see how the rounds play out.
Controls: use mouse on the main menu. Player 1 uses WASD as arrows, Q/E to add/remove units. Player 2 uses IJKL as arrows, O/U to add/remove units. When both dropships are full, mechs can be set up, after which the battle takes place.