Rainbow Frontline is a free 2D pixel space shooter where you pilot a retro spaceship through a rainbow galaxy under constant alien attack. Each stage is color-coded from red to violet, throwing increasingly tough waves of enemies and endless falling meteors at you. Your job is simple: dodge, shoot, and survive long enough to reach each boss fight.

Between waves, you spend collected coins on upgrades that actually matter — extra lives keep your run going, timed shields bail you out of tight spots, and damage boosts shred through tankier enemies faster. Boss fights cap off each color-themed level with some of the most chaotic screen action in the game. The one-finger tap-and-fly controls make it easy to pick up, but dodging meteors while tracking multiple enemy projectiles will test your reaction speed fast. Chasing your high score adds serious replay value once you've learned the enemy patterns.

This game is a perfect fit for fans of classic arcade shooters, retro pixel games, and anyone who grew up playing old-school vertical scrolling space games. If you enjoy free online airplane shooting games, wave-based spaceship survival games, or pixel art arcade shooters with upgrade systems, Rainbow Frontline delivers exactly that without any install required. Play it directly in your browser and see how far through the spectrum you can survive.