Retro Blaster is an endless survival space shooter developed by ZapGames as an HTML5 browser game using Unity WebGL. Inspired by the quarter-eating arcade machines of the 1980s, it drops you into a ship that fires automatically and never comes to a full stop.

Your job is to survive as long as possible while racking up the highest score you can, dodging bullet-hell enemy formations and collecting power-ups that dramatically alter each run.

What separates Retro Blaster from typical shoot 'em ups is that you cannot aim — you aim by moving. Since the ship constantly fires forward, lining up kills means positioning your entire ship into the path of enemies, which also puts you closer to danger.

Coins collected during runs unlock new ships with different stat profiles affecting fire rate, shield strength, and speed handling. Each run feeds into a leaderboard, turning every attempt into a personal challenge to survive a few seconds longer or squeeze out a few more points.

As a free online game, it loads instantly on desktop, mobile, and tablet browsers. Move your ship using the arrow keys or WASD. The ship fires automatically and continuously, so there is no shoot button — your only inputs are directional movement, boosting, and braking.

The boost key provides a burst of speed to escape tight spots, while the brake slows your ship to help navigate through dense enemy clusters.

The exact key bindings for boost and brake may vary — check the in-game instructions or settings menu, as they are typically assigned to Shift and Space respectively. Retro Blaster also supports gamepad input for players who prefer controller-based movement.

There are no levels, stages, or final bosses. Retro Blaster is an infinite survival run — enemy waves spawn continuously and grow denser and more aggressive the longer you stay alive. Your run ends when your ship is destroyed.

The goal is purely score-based: survive as long as possible, destroy as many enemies as you can, and collect coins along the way. Every run is a fresh attempt at beating your personal best or climbing the leaderboard.

Power-ups drop during gameplay and can completely change the trajectory of a run.