COLLAPSAR

# COLLAPSAR — Gravity Survival

You don't shoot. Your weapon is gravity itself.

Place Gravity Wells to capture enemies, sending them into orbital acceleration before violent collisions. Wells generate resonance fields between each other — press SPACE to trigger Collapsar Burst.

The kinetic shards of shattered enemies retain their velocity and keep dealing damage — the only physics-manipulation survival experience on the market.

## Features

- **Gravity Well Physics**: F = k × mass / r² — real gravitational force simulation

- **Orbital Combat**: Capture enemies in gravity wells, accelerate them into collisions

- **Collapsar Burst**: Chain resonance fields between wells for massive damage

- **Kinetic Shards**: Shattered enemies become projectiles that keep dealing damage

- **36 Upgrades**: Build your core with common, rare, epic, and legendary upgrades

- **12 Boss Patterns**: Each boss has unique mechanics and attack patterns

- **8 Relics**: Powerful passive items that last the entire run

- **60+ Achievements**: Unlock achievements across multiple playthroughs

- **12 Challenge Modes**: Unique restrictions and goals for extra rewards

- **Abyss Mode**: Endless dungeon with increasing difficulty

- **Talent Tree**: Permanent upgrades across all runs

- **Daily Challenge**: Same seed for all players, compete globally

- **Zero Dependencies**: Pure HTML5 Canvas + vanilla JavaScript

## Controls

- **Mouse Click**: Place a gravity well

- **Space**: Trigger Collapsar Burst

- **ESC**: Pause game

## How to Play

1. Click anywhere on screen to place a gravity well

2. Enemies near the well get pulled into orbit

3. Orbiting enemies accelerate and collide with each other

4. Collisions deal damage — faster enemies deal more damage

5. When wells are close enough, resonance fields connect them

6. Press SPACE to trigger Collapsar Burst — detonates all resonance fields

7. Survive waves, level up, choose upgrades, defeat bosses

Made with pure HTML5 Canvas. No engines, no frameworks, no dependencies.