Raiden II (Easy Version, US, Set 1) is a variant of Seibu Kaihatsu’s classic 1993 vertical-scrolling shoot ’em up, released in North American arcades under license to Fabtek. This particular ROM set trims back the game’s notoriously punishing bullet patterns, making it a more approachable way to experience the sequel to the original Raiden without the usual brutal difficulty spike.
How to Play
Pilot the Fighting Thunder fighter through seven stages of enemy squadrons, ground targets, and stage bosses, collecting weapon power-ups along the way. In the browser:
- Move: Arrow Keys
- Shoot: Z
- Bomb: X
- Insert Coin / Start: Shift / Enter
Tips
- Weapon pickups cycle between colors â wait for Red (spread Vulcan shot), Blue (straight laser), or Purple (the lock-on plasma beam) before grabbing one.
- The Diffusion Bomber clears the screen and grants brief invincibility, so save it for moments when you’re boxed in by bullets rather than firing it reflexively.
- Since this set’s difficulty is toned down compared to the standard release, it’s a good way to learn stage layouts and boss patterns before tackling the harder versions.

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