Half-Life: Natural Selection Codes -

Cheat mode:
Load game with the command line: hl.exe -dev -console. Then, press ~ if the orange text on the screen does not disappear. During gameplay, press ~ to display the text prompt and type in sv_cheats 1. Press ~ and enter one of the following console commands to activate the corresponding cheat function.

New random hive for alien team	spawnhive
Destroy random hive for alien team	killhive
Random upgrade category (1 for defense, 2 for offense, 3 for movement, 4 for sensory)	addcat <1-4>
Remove upgrade category	removecat <1-4>
Get points	givepoints
Kill all players with your current weapon	killall
Toggle invincibility for yourself.	invul
Immediately start game	startgame
End game with victory for indicated team	Endgame <1 or 2>
Lala tooltip	tooltip lala
Play test event	testevent
Display current number of human players	getnumplayers
Teleport to nearest command station and start commander mode	startcommandermode
Exit commander mode	stopcommandermode
Simulate one web touch	web
Set culling distance needed for commander mode	setculldistance <value>
Set env_gamma level	setgamma <1.0-2.0>
Instant building construction	bigdig
Instant research	hightech
Give orders to yourself	orderself
Edit particle system	editps <name>
Lists particle systems	listps
Generate new minimap.	buildminimap
Crash NS	crash
Causes NS to assert	assert
Run server-side script	run <name>
Run a client-side script	clientrun <name>
Get indicated upgrade	giveupgrade <upgrade code>
Remove indicated upgrade	removeupgrade <upgrade code>
Kill all command stations	killcs
Slightly damage one command station	attackcs
Generate random alert	alert
Parasites self (no damage)	parasite
Paralyzes self (as level 5 ability)	paralyze
Show bounding boxes	boxes
Attempt to overflow player	overflow
Send test death message	deathmessage <weapon name>
Set skin color 0 is white, 1 is black	setskin <0 or 1>
Easier redemption test	redeem

Upgrade codes:
Use one of the following values for the giveupgrade and removeupgrade codes.

Distress beacon : 30
Faster reinforcements: 31
Jetpacks: 28
Marine armor upgrade: 20
Marine armor upgrade: 21
Marine armor upgrade: 22
Marine damage upgrade: 23
Marine damage upgrade: 24
Marine damage upgrade: 25
Motion-tracking: 33
Power Armor: 29
Siege: 26
Stimpack: 27