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🌎 Orbital Defense — How to Play
Objective: Defend Earth from 15 waves of alien invaders.
Controls:
- ←→ Arrows — Move ship along orbital ring.
- ↑↓ Arrows — Switch orbit height (close/medium/far - 3 levels).
- Space — Fire weapon.
- 1 — Laser (straight, medium damage, fast).
- 2 — Missiles (homing, lower damage).
- 3 — Shield Pulse (AoE around Earth, uses energy).
- 4 — Space Mines (deploy behind ship, area denial).
Power-ups: Satellite (auto-turret), Repair (restore Earth HP), Shield (temporary invincibility), Overcharge (full energy + damage boost).
Combo System: Rapid kills build combo multiplier for score. Combo decays when you miss.
Enemy Types: Drone (basic), Fighter (fast), Bomber (tanky), Elite (fast+strong), Boss (massive).
Tips: Switch orbits to intercept! Save shield pulse for emergencies. Deploy mines at chokepoints!