Quake 4 is the fourth title in the series of Quake FPS computer games. It was developed by Raven Software and distributed by Activision. Raven Software has collaborated with id Software, the creators and usual developers of Quake games in the past. In this case, id Software supervised the development of the game as well as providing the Doom 3 engine, now referred to as 'id Tech 4', upon which it was built. Quake 4 went gold in early October 2005 and was released on October 18, 2005 for the PC, and later for the Xbox 360 and the Apple Macintosh. A special DVD Collectors Edition also exists, including promotional material and the game Quake II with its expansions. The Xbox 360 version of Quake 4 is based on the Special Collectors Edition, and therefore also includes Quake II.
(Wikipedia)

CHEATS

Press the Left Ctrl + Alt + ~ during game play to display the console window.

Codes

Switch to indicated weapon slot, regardless if you have a weapon there - _button0

Switch to indicated weapon slot, regardless if you have a weapon there - _button1

Switch to indicated weapon slot, regardless if you have a weapon there - _button2

Switch to indicated weapon slot, regardless if you have a weapon there - _button3

Switch to indicated weapon slot, regardless if you have a weapon there - _button4

Switch to indicated weapon slot, regardless if you have a weapon there - _button5

Switch to indicated weapon slot, regardless if you have a weapon there - _button6

Switch to indicated weapon slot, regardless if you have a weapon there - _button7

Show AAS stats - aasStats

Adds debug arrow - addarrow

Core to game chat lines - addChatLine

Add debug line - addline

Scale contact friction - af_contactFrictionScale

Force the given friction value - af_forceFriction

Name of the body to highlight - af_highlightBody

Name of the constraint to highlight - af_highlightConstraint

Scale the joint friction - af_jointFrictionScale

Maximum angular velocity - af_maxAngularVelocity:

Maximum linear velocity - af_maxLinearVelocity

Show structures of articulated figures not at rest - af_showActive

Show bodies - af_showBodies

Show body names - af_showBodyNames

Show two bodies constrained by the highlighted constraint - af_showConstrainedBodies

Show constraint names - af_showConstraintNames

Show constraints - af_showConstraints

Show the inertia tensor of each body - af_showInertia

Show joint limits - af_showLimits

Show mass of each body - af_showMass

Show primary constraints only - af_showPrimaryOnly

Show articulated figure CPU usage - af_showTimings

Show the total mass of each articulated figure - af_showTotalMass

Show tree-like structures - af_showTrees

Show velocity of each body - af_showVelocity

Skip friction - af_skipFriction

Skip joint limits - af_skipLimits

Skip self collision detection - af_skipSelfCollision

Test for bodies initially stuck in solid - af_testSolid

Scale time - af_timeScale

Use impulse-based contact friction - af_useImpulseFriction

Use impulse-based joint friction - af_useJointImpulseFriction

Use linear time algorithm for tree-like structures - af_useLinearTime

Use constraint matrix symmetry - af_useSymmetry

Enable blocked fail safe handling - ai_blockedFailSafe

Draw movement information for monsters - ai_debugMove

Display script calls for the specified monster entity number - ai_debugScript

Draw trajectory tests for monsters - ai_debugTrajectory

Draw attack cones for monsters - ai_showCombatNodes

Draw obstacle avoidance information for monsters - ai_showObstacleAvoidance 1

Draw obstacle avoidance information for monsters and player - ai_showObstacleAvoidance 2

Draw path_* entities - ai_showPaths:

Write .AVI for a command demo - aviCmdDemo

Save demo in .AVI format - avidemo

Write .AVI for a demo - aviDemo

Write .AVI for the current game - aviGame

Game benchmark - benchmark

Benchmark - benchmark

Bind command to a key - bind

Bind ragdoll at the current drag position - bindRagdoll

Bind a key, but unbinds it first if there are more than two binds - bindunbindtwo

Blink a debug line - blinkline

Center view - centerview

Check if new version of the game is available - checkNewVersion

Clear the console - clear

Clear all lights - clearLights

Drop current weapon - clientDropWeapon

In-game GUI message mode - clientMessageMode

Voice chats - clientVoiceChat

Team voice chats - clientVoiceChatTeam

Close the view showing any notes for this map - closeViewNotes

Cull back facing polygons - cm_backFaceCul

Debug collision detection - cm_debugCollision

Color used to draw the collision models - cm_drawColor

Draw filled polygons - cm_drawFilled

Draw internal edges green - cm_drawInternal

Collision mask - cm_drawMask

Draw polygon and edge normals - cm_drawNormals

Dump the console text to a file - conDump

Connect to a server - connect

Crash game - crash

Restart the cvar system - cvar_restart

Apply damage to an entity - damage

Launch script debugger - debugger

Print parses - decl_show 1

Print parses and references developer - decl_show 2

Delete selected entity - deleteSelected

Save screenshot for a demo - demoShot

Load a map in developer mode - devmap

List a folder - dir

List a folder with sub-folders - dirtree

Disassembles script - disasmScript

Disables connection for current multi-player game - disconnect

Disconnect from a game - disconnect

Compile map - dmap

Print indicated text - echo

Launch in-game Articulated Figure Editor - editAFs

Launch in-game Declaration Editor - editDecls

Launch GUI Editor - editGUIs

Change lighting - editlight

Launch in-game Light Editor - editLights

Open the in-game editor - editor

Launch in-game Particle Editor - editParticles

Launch in-game PDA Editor - editPDAs

Launch in-game Script Editor - editScripts

Launch in-game Sound Editor - editSounds


Here is the final battle of the game and the end movie: