Ketsui: Kizuna Jigoku Tachi is an intense vertical bullet hell shooter developed by Cave and released for arcades in 2002. Piloting a heavily armed combat helicopter, you must weave through overwhelmingly dense enemy fire while mastering a risk-reward lock-on scoring system. Renowned for its extreme difficulty and intricate chip multiplier mechanics, it remains a landmark title in the “danmaku” genre.
How to Play
To start playing in your browser, press Shift (or 5) to insert a coin, then Enter (or 1) to begin. Use the Arrow keys to maneuver your helicopter through the bullet patterns. Press Z to fire your standard spread shot, or hold the button down to focus your movement and deploy your lock-on options. When cornered by overwhelming fire, press X to deploy a screen-clearing bomb to survive.
Tips
- Lock-on mechanics: Tapping fire provides a wide spread for crowd control, but holding fire slows your speed and locks your options onto enemies for concentrated damage.
- Close proximity scoring: Destroying enemies from point-blank range drops high-value multiplier chips, encouraging a highly aggressive and risky playstyle.
- Save bombs for survival: Using a bomb will immediately break your chip multiplier. Prioritize dodging, and only use bombs when completely trapped.

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