The game uses the keyboard and mouse in fairly standard configurations.

Mouse Movement
The mouse movements are as follows:

• Mouse button 2 (usually middle or right button depending on number of buttons available) Toggle GUI (see below)
• Mouse button 1 (usually left button) Click and drag to turn left, right, up, down. The further from the centre the cursor, the faster the movement.

Key Bindings
The key bindings are as follows:

W, Keypad 8, Up arrow	Move forward
S, Keypad 2, Down arrow	Move backward
Left arrow	Turn left
Right arrow	Turn right
A	Strafe left
D	Strafe right
Page up, Keypad 9	Move up
Page down, Keypad 3	Move down
Enter / Mouse Button 2	Toggle GUI (see below)
F1	Toggle help screen
Esc	Quit with confirmation (pressing Escape again cancels - you must click on the Okay button to exit)
F10	Quit without confirmation

Graphical User Interface
There are a number of buttons and sliders that offer methods of interacting with the game. To display these controls, please consult the key bindings above. To modify a slider's value, right click and drag the slider bar. The controls available are as follows:

Weather Slider	This provides a means of controlling the weather. As the slider progresses from left to right, the weather conditions worsen. Total cloud cover occurs at around one third of the slider, precipitation starts at half way, graduating into a lightning storm at the far end of the scale. The game starts on a clear day.
On systems that support advanced rendering, the following options are available:
Vignette Slider	Applies a vignette effect, which darkens the edges of the screen.
Saturation Slider	Applies a saturation effect, which converts the colours to gray scale.
Brightness Slider	The game uses an automatic high-dynamic-range exposure adjustment feature. Adjusting the brightness changes the target value for this autoexposure feature.