Defend against an endless invasion of nodes linked by energy beams by controlling your planet's laser defense system

There are 8 enemy types and 7 different power-ups

Z - shoot
Space - use charge blast
Arrow keys - move left/right
Escape - pause game

please let me now how easy/difficult you think this is accompanied with what scores you get

Tags: laser, defense, system, space, defender, planet, node, ring, stars, shoot, arcade, retro, invasion, attack, powerups, galaxy, ship, rocket, missile, explosions

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