SOLAR SENTINEL

Objective

Defend your planets, moons and space stations from waves of alien attackers across 10 escalating levels.

Turn Structure

Each turn you give orders to your units, then click End Turn. All units — yours and the enemy's — execute their orders simultaneously.

Selecting & Ordering Units

• Click a friendly unit to select it.
• Click Thrust then click/drag on the canvas to set a velocity change. Energy is consumed equal to the thrust magnitude.
• Click Fire then click an enemy unit to target it (must be in range).
• Click Charge Shields to spend energy regenerating shields this turn.
• Orbital Forts and Minefields fire automatically.

Movement & Orbital Mechanics

Ships start in stable circular orbits around the sun. Each turn, gravity from the sun (and large planets) affects every ship's trajectory. Apply Thrust to change velocity. Energy cost scales with thrust magnitude and ship mass. The projected trajectory preview shows your gravity-accurate path — green = stable orbit, yellow = escape trajectory.

Hull Materials

When purchasing ships you can choose a hull material. Materials affect mass (heavier = more thrust energy), hull strength, shields, energy capacity, and weapon power. More exotic materials cost extra credits.

Combat

Weapons fire at enemies within range. Damage hits shields first, then hull. Ships destroyed when hull reaches zero.

Technology

Earn resources each turn. Spend them on the Tech Tree — three randomly-themed branches (Offense / Defense / Utility), six tiers each. Upgrades persist across levels.

Deployment

Before each level begins you may spend resources to purchase additional ships, orbital forts, or minefields and place them in the inner solar system.