Plain gravity is the main mechanic here, and i use it to plan shots carefully. You have a limited supply of bullets to conserve for a higher score.
Step to click to aim and shoot, using your arsenal to battle enemy bases.
Clicking to aim and shoot is the main action. You must use your arsenal to battle and obliterate enemy bases and structures.
Conserving ammo is more important than shooting fast. Most careful planning is key to completing missions.
Q: What are the controls? A: Clicking to aim and shoot.
Q: What is the objective? A: Destroy enemy bases and structures.
Q: Is there a timer? A: Not stated.
Q: What is the main mechanic? A: Gravity.