F X Alternate Set Bootleg is a vertically scrolling Arcade shoot-’em-up, playable directly in your browser. This version is an unofficial release of the 1986 title S.R.D. Mission (developed by Kyugo and published by Taito). You pilot a spacecraft over a massive, overrun space station, tasked with fighting off alien forces and rescuing stranded crew members.
How to Play
Use your ship’s lasers to destroy airborne enemies and bombs to take out ground targets, all while constantly scrolling forward. In the browser emulator, use the standard arcade controls:
- Movement: Arrow Keys
- Action Buttons: Z, X, and C
- Insert Coin: Right Shift
- Start: Enter
Tips
- Watch your fire: You must rescue crew members by flying over them, but your weapons will eliminate them if you are careless. Clear out nearby enemies before moving in for the rescue.
- Grab the orange suits: While blue-suited survivors count toward your rescue total, picking up the orange-suited crew members provides essential power-ups for your lasers and bombs.

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