N2O Nitrous Oxide
↗ 21%
🙂 7.1/10
(Playstation - US, Shoot'em Up)
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Complete
$18.99
Loose $12.99
Developed by:
Gremlin Interactive Limited
Published by:
ZOO Digital Publishing Ltd.
Released On:
01 Jan 1998
N2O Nitrous Oxide's gameplay is in many ways similar to the arcade classic Tempest . The game involves flying a ship down a tunnel. You can move left and right along the tunnel's walls, and fire into the tunnel. You have a standard blaster, and can pick up a range of special weapons along the way. You also can pick up a 'smart bomb' type weapon, that launches a firewall down the tunnel.
Enemies are all based on real world insects, and range from flies to mosquitos, scorpions, and spiders. Each tunnel introduces one new enemy. After each tunnel has been cleared you have to defeat a larger version of that tunnel's new enemy before you can leave.
Mushrooms can be collected off the tunnel walls. Once you have collected the required amount, you can enter a bonus level. These consist of open tunnels, containing two items: eggs, and spinning blades. The objective is to avoid the blades, and shoot as many eggs as you can. When you shoot an egg you get points, however the ship also speeds up making it harder to avoid the blades.
At the end of the game there is a final mutant boss insect to defeat.
UPC-A:
086162048241 (USA)
Part #:
SLUS-00637 (USA)
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Multiplayer Game Modes:
Co-Op
Gamepads Supported:
DualShock
Input Devices Required:
Gamepad
Sound Capabilities:
Dolby Surround
Save Game Methods:
External Storage
Multiplayer Options:
Same/Split-Screen
Number of Offline Players:
1-2 Players
Number of Players Supported:
1-2 Players
Miscellaneous Attributes:
Audio CD Tracks
Controller Types Supported:
Analog Controller
Prices as of 30 Jul 2026
Typical $18.99–$18.99 (last 90 days)
New
Complete
Loose
Box
Manual
Smoothed
Log · Auto
Medians
Market activity: active · about 99 sales a year
Activity is a 12-month sales count. Dashed segments rest on two sales a year or fewer.
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Manual
Game Guide
Extracted from the original game manual
This is a futuristic arcade-style shooter where players pilot a "Tunnel Runner" through hazardous, alien-infested tubes on Neptune. The goal is to destroy genetically engineered "Super Warriors" and mutations to prevent an invasion of Earth.
Story
START UP
Set up your PlayStation game according to the instructions in its Instruction Manual.
Make sure the power is off before inserting or removing a compact disc. Insert the Nitrous Oxide disc and close the CD door.
Insert game controls and turn on the PlayStation game console. Follow on screen instructions to start a game.
Console
•
Top View
•
SONY
Controller
•
Top View
INTRODUCTION
Somewhere deep in the future our Galaxy is at war. On the nearby planet of Neptune, forces of evil have initiated their new plans to invade the Earth.
By accelerating sub-atomic particles around a tubular shaped circuit known as The Torus, they are developing a race of Super Warriors. Together with advanced genetic engineering, this central birthing canal is capable of producing an army of lethal genetically mutated insects.
Nitrous Oxide, a pollutant by-product emitted inside The Torus, provides a high-octane fuel for your Tunnel Runner, but unfortunately it also provides the perfect breeding environment for the secretly incubating species.
Your Mission
•
Set a course for Neptune.
•
Fly your Tunnel Runner into the Nitrous Oxide filled tubes.
•
Destroy the Super Warriors and genetic mutations before they are strong enough to invade Earth.
•
Come home for milk and cookies.
How to Play
GETTING STARTED
Insert the N2O: NITROUS OXIDE disc into the PlayStation® console and close the disc cover. Insert a game controller and turn on the PlayStation®.
After a few moments, the animating Title Screen will appear.
ANIMATING TITLE SCREEN
•
Press to proceed to the MAIN OPTIONS MENU
MAIN OPTIONS MENU
Once the game has loaded, you will be presented with the MAIN OPTIONS MENU. Read the rest of this manual to learn how to operate all of the options and controls.
You can return to this screen by pressing the A button. To operate these menus, you must first highlight an option, using the or Directional buttons. You are then able to select the options by pressing the button.
ONE-PLAYER GAME
Start a one player game.
TWO-PLAYER GAME
Start a single screen, TWO-PLAYER game. All of the options available in a ONE-PLAYER game are also available in this mode, except for zooming into a 1st Person Perspective in which the camera will remain LOCKED during the game.
The two players are competing against each other for the high score.
SPLIT TWO-PLAYER GAME
Start a TWO-PLAYER game, where the screen is split, with each player using their own camera view. All the options available in a ONE-PLAYER game are also available in this mode, except for zooming into a 1st Person Perspective.
The two players are competing against each other for the high score.
LOAD SAVED GAME
This option allows you to load previously saved game data, including all of your high scores and game options, from a Memory Card. To operate the Load Game menu, use the or Directional buttons to highlight the game of your choice, then press the button.
All of the Memory card options require you to confirm any request before they will be completed. When prompted, highlight YES and press the button to confirm, or highlight NO and press the button to cancel. Loading saved game from the Memory card will overwrite any settings and changes that have been made during any previous session.
VIEW HIGH SCORES
View the High Scores table and see where you rank. When you have finished viewing this, press the button to exit back to the MAIN MENU.
VIEW CREDITS
View the Credit List for the game.
TUTORIAL
By selecting the TUTORIAL option, you will be taken into the game. The TUNNEL RUNNER will be automatically controlled.
A TEXT BOX will be displayed, telling you which game action is being performed. Read the text box and press the button to and follow that action. You can choose to run the tutorial right through to the end of the level or you can skip out of the tutorial at any time by pressing the button.
GAME OPTIONS
In the GAME OPTIONS menu, you are presented with a series of different settings, which can be adjusted, according to your own personal preference. Use the Directional buttons to highlight an option, then press the button to select.
If you wish to exit from the current menu, press the button or highlight and select the MAIN MENU option.
SAVE SETUP TO MEMORY CARD
This option allows you to store the current game options and high scores onto a Memory card. If you do not store those options to a Memory card, they will be lost once the PlayStation is turned off or reset.
Before the data is stored, you will be asked to confirm your request. Highlight YES and press the button to confirm, or highlight NO and press the button to cancel.
LOAD SETUP FROM MEMORY CARD
This option allows you to load any previously saved game options and high scores from a Memory card. Before the data is loaded, you will be asked to confirm your request.
Highlight YES and press the button to confirm, or highlight NO and press the button to cancel.
CENTER SCREEN
This option allows you to alter the position of the game screen on your monitor. Use the Directional buttons to move the screen.
Once you set this correctly, press the button to confirm. If you wish to cancel the adjustment, press the button.
CHANGE SOUND
Within this menu, there are several options that can be adjusted. Highlight the required option using the and Directional buttons and alter the setting using the and Directional buttons.
•
AUDIO SETUP - Highlighting and selecting this option will allow you to choose between MONO, STEREO or DOLBY PRO-LOGIC.
•
SFX VOLUME - Highlighting and selecting this option will allow you to adjust the volume of the in-game sound effects. As you adjust this volume, the indicator bar will change size accordingly.
•
AMBIENT VOLUME - Highlighting and selecting this option will allow you to adjust the volume of the in-game ambient background sound. As you adjust this volume, the indicator bar will change size accordingly.
•
MUSIC VOLUME - Highlighting and selecting this option will allow you to adjust the volume of the in-game music by THE CRYSTAL METHOD. As you adjust this volume, the indicator bar will change size accordingly.
•
CD TRACK - Highlighting and selecting this option will allow you to adjust the order in which music by THE CRYSTAL METHOD will be played. You have the option of setting the order in which the tracks are played to other, RANDOM or IN ORDER. Also you can select a particular track you would like to hear.
CHANGE FEATURES
This option allows you to tailor certain features within the game using the and Directional buttons and then use the and buttons to toggle between the different option settings.
•
Lens Flare - Changes the type of lens flare used within the game.
•
Lens Type - Changes
Controls
SELECT and START
Soft Reset
START then SELECT
Quit Game
Directional buttons
Steering
L1
Brake
R1
Jump
TRIANGLE
Shields
CROSS
Standard Laser
SQUARE
Fire-Wall
CIRCLE
Special Weapon
Directional button
Toggle Special Weapon
L2
Zoom Camera In
R2
Zoom Camera Out
START
Pause/Start
SELECT
In-Game Options Menu
Items & Weapons
NINJA
A double-edged razor star shot from both sides of The Tunnel Runner, it shoots 360° up the sides of The Torus, taking out any parallel enemies.
DRAM BUSTER
Two attached mines that bounce down The Torus and explode on impact.
RAPIDO
A highly rapid burst of 300mm machine gun fire with a very wide vertical range of attack.
HOMING ACCK-IT
A missile that homes in on the target nearest the Tunnel Runner, in a direct line down The Torus.
BOOMERANG
A yellow weapon resembling a thin barbell, it spins around the torus with a semi-guidance system, semi-homing in on the nearest target, and remains for retrieval after destroying an enemy.
THREESOME
Three glowing laser bolts shot from the front of the craft, one straight, one skimming the left wall, and one skimming the right wall of The Torus, offering a wide attack range and ideal for destroying three enemies or a spider's web.
SHIELDS
Formed from Crystal LFP spores released by red-spotted toadstools (altered brown mushrooms), these hardened semi-transparent forms coat your ship and can be activated with the ▲ Button.
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