Fallout 3 (Collector's Edition) PC Game Cheats

Cheats:
When playing hit the tilde (~) key to pull up cheat console.

Input addspecialpoints X - Special Points (X = amount)
Input addtagskills X - Tag Skill Points (X = amount)
Input advlevel - Level up
Input GetQuestCompleted - Finish present quest
Input getXPfornextlevel - Up one level
Input help - Display all console commands
Input modpca Y X - S.P.E.C.I.A.L. stats (Y = stat type, X = amount)
Input modpcs Y X - Skills (Y = stat type, X = amount)
Input player.setlevel X - Set player level (X = level)
Input player.additem 000000F X - Get indicated amount of caps (X = amount)
Input removefromallfactions - Remove player from all factions
Input rewardKarma X - Add indicated amount of Karma Points (X = amount)
Input setpccanusepowerarmor X - Toggle Power Armor use (X = 0 or 1)
Input setspecialpoints X - Set Special Points (X = amount)
Input settagskills X - Sets Tag Skill Points (X = amount)
Input tcl - No clipping mode
Input tmm1 - All mapmarkers
Input tdt - Toggle debug display
Input tlv - Toggle leaves
Input tgm - God mode

V.A.T.S.:
To survey the area around you for foes you missed, hit the VATS button repeatedly as you make your character spin.

Continuous Hacking:
You have 4 attempts to hack successfully. Try 3 times, bail out, then try again; repeat this process.

More Space:
When running out of inventory space, find a companion character to help you.

Behemoth Locations:
Can be located in: Evergreen Mills, Galaxy News Radio, Jury Station, Takoma Industrial, and The Capitol Building.

Locating Dogmeat:
Go to the Scrapyard, northeast from Megaton, over the river, where you'll find the dog.

Unlimited Good Karma in Megaton:
Go to Megaton and you can locate the Children of the Atom Church. There’s a priest who will be near the bomb. Give him donations, and you’ll get a karma boost.

Increasing Your Experience:Set the game's difficulty to Very Hard; next, hack the computer or do some lock picking. These actions will give you more experience points.

Stowing Goods on Dead Bodies:
Place your own goods onto a corpse and get them later.

Infinite Mutant Karma:
Go to Big Town at night; The town will be attacked from a Super Mutant raiding party; slay each Super Mutant to acquire more karma.

Conserve Your AP:
When battling a foe or group of foes, aim at them in VATS, but don't shoot. You'll keep your AP but still be aiming at the part of the foe's body you were in VATS.

Get Fawkes Super Sledge:
When you first meet Fawkes, trade equipment with him to get the sledge.