Silent Debuggers

From NEC Retro


  • TurboGrafx-16
  • PC Engine

SilentDebuggers title.png

SilentDebuggers PCE JP Title.png

Silent Debuggers
System(s): PC Engine, TurboGrafx-16, Virtual Console (Wii)
PC Engine
Data East
NEC Technologies
Wii Virtual Console
Genre: First Person Shooter

Number of players: 1
Release Date RRP Code
PC Engine
¥6,8006,800 DE90004
Wii Virtual Console
Wii Virtual Console
ESRB: Everyone
Wii Virtual Console
PEGI: 7+
Wii Virtual Console


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Silent Debuggers (サイレントデバッガーズ) is a first person shooter for the PC Engine and TurboGrafx-16.



Predating both Doom and Wolfenstein 3D, Silent Debuggers seems to be an evolution of first-person dungeon crawlers such as Wizardry, but with real-time action, a science-fiction setting, and none of the usual stat or level building that comes with an RPG. Like a dungeon crawler, movement is grid based, and the player's character can only turn in 90-degree angles. Movement is performed with the D-Pad, and holding while using the D-Pad will move the gun sight.

The game takes place in a space station that has become infested with aliens. The central section is an elevator that lowers to another level when all of the aliens are killed on the current level. This central area is divided into 8 main rooms: B Block controls the lights, C Block recharges the player's batteries, F Block allows the sound sensors to work, G provides ammunition, and the other 4 don't provide any specific function.

Starting in the second level, certain types of aliens can enter this central section and attack these rooms. If one of these rooms is destroyed, it no longer provides whatever function it did before. However, Leon, who stays in the central computer room, will usually give the player a new item that somewhat replicates the function of the now-destroyed room (i.e. if the C Block is destroyed, he gives the player an item that gradually refills their batteries when they have it equipped). If all 8 rooms are destroyed, it is game over. Any damage done to any room stays until the entire game is completed; there is no way to repair them at all. Similarly, the ammunition room has a limited supply of ammunition for the whole game, and once it's out, it's out until the game is over. Between this and the mechanic of having to carefully track down aliens with a radar, it's arguable that Silent Debuggers is a proto-survival horror game.


The player is given a choice of two types of weapons to bring with them: an assault rifle that is fired with , and a launcher that is fired with  RUN . Only one weapon out of both types may be chosen.

Assault rifles

Hand Gun
Ammo type: Batteries 
A beam gun that the player starts out with.
Motor Cannon
Ammo type: Live ammunition (90 shots) 
A general-purpose recoilless machine gun that fires explosive bullets at high speeds.
Mega Beamer
Ammo type: Batteries 
Fires a grenade launcher-like beam after charging for approximately 2 seconds with battery energy.
Lipp Shot
Ammo type: Live ammunition (60 shots) 
A multi-purpose homing gun that fires micro-missiles.


Grenade Launcher
Ammo type: Live ammunition (5 shots) 
A very slow weapon that can kill almost all enemies if it hits its mark.
Sonic Launcher
Ammo type: Batteries 
Emits ear-piercing noises that will scare away enemies. The player's ears are protected by their helmet.
Sleep Launcher
Ammo type: Live ammunition (10 shots) 
Puts enemies to sleep for a short while. They will wake up if the player gets too close or waits for too long.


Sound Sensor Version 2 (Multi-Sensor)
Senses enemies that cannot be detected by the standard sensor.
Jump Unit
Consumes a lot of battery energy to instantly transport the player to a remote point.
Night Vision
Allows the player to see enemies in the dark.
Gradually restores energy to each unused battery.
Muzzle Adapter
Doubles the attack power of a weapon when attached to its muzzle.

Production credits

  • Planner: Tdr Watanabe
  • Graphic: 68000 Isiro
  • Programmer: Works Sasamoto
  • Sound: Nyanko Sakai, Syougo, Koremasa, Atomic Takafumi, Takahama Yuusuke, Suzuki Yuuji
  • Test play: Verago Nakamura
  • Director: A. Kawai
  • Co-Operaters: Eliminator Iwao, Prowres Nozima, Carol Abematsu, Gummon Sugahara, RZR Nonaka, Fanky Maeda, Gamer Miyagawa, Mtx Sahara, K1 Sato, Hiace Isimaki, Dosanko Yamaguchi, Mira Tezuka, Gamma Sugiyama, H. Yosida, S. Takeuchi, K. Tsukakoshi, K. Saito, N. Abe
  • Produce: T.Kaneyasu
To Be Continued
In-game credits (JP)

Magazine articles

Main article: Silent Debuggers/Magazine articles.

Physical scans

PC Engine version

TurboGrafx-16 version

TurboGrafx-16, US

Technical information

ROM dump status

System Hash Size Build Date Source Comments
PC Engine
CRC32 616ea179
MD5 37bf7db43aebb4fbbb886f8ca4062e0d
SHA-1 9101f738a37c9fcbc69308449cdfb94c928f64c6
512kB Card (JP)
CRC32 fa7e5d66
MD5 46719950684f5148c20730c6fd7df4a0
SHA-1 c010ba9ff55a2558bba94ac39aa0160c76daff0c
512kB Card (US)


Silent Debuggers

SilentDebuggers title.png

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