Plain gameplay requires fast decisions. The game has five ages where you manage units and turrets. i think the chaos makes it hard to control things sometimes.
Clicking to place units starts the battle, you evolve through five ages fighting smarter enemies.
The controls are simple but tricky. The physics can feel wonky.
Most players find that managing units and turrets quickly helps. You have to race against the clock.
Q: What are the controls? A: The controls are simple but tricky.
Q: What is the objective? A: Manage units and turrets through five ages.
Q: What is a stated feature? A: The physics can feel wonky.
Q: What is the main mechanic? A: Clicking to place units starts the battle.