First, use the ''bemymonkey'' (it is not case sensitive) command to enable cheats. Then use the ''sum'' command to spawn one of the entities in this list.

For example, ''sum u2pawns.u2izarian'' would spawn an Izarian with an energy rifle. This takes a few seconds to activate.

Here's the entire list.

Press ~ during game play and enter the following codes. Type "Bemymonkey" to activate cheat mode.

Dance party:

Make sure you save your game before trying out this trick, You'll need your saved game to keep on playing after doing this trick.

After saving while still playing the game, type the open atlantis?missioncompleted=83 cheat and press [Enter]. This will load a secret interlude that features lots of Sea Goats dancing on the bridge of the Atlantis, with balloons and a shiny Unreal Logo.

Balloon Mania
make sure you save your game before before trying out this trick, You'll need your saved game to resume play after doing this trick.

At any time while playing the game, type the open atlantis?missioncompleted=110276 cheat and press [Enter]. This will load a secret interlude. This time, it is in your cabin/living quarters. They are filled with floating Sea Goat and Lincoln balloons. There are more balloons outside your cabin.

The first time you are on the Atlantis, head forward from your ship. Climb up the ladder and head to the left, then turn around. Walk down the hallway until you see a panel on the floor which can be opened. Inside you will see a small animal called a ''Seagoat''. ''Talk'' to it with the Use key and answer it's questions in the following order:

(1) Spam

(3) Spam

(2) Spam

(3) Humbug

The Seagoat will then disappear and the text ''Lincoln is pleased'' will appear. Head down to the briefing room and talk to Aida to begin the briefing. When she shows you the distress signal she received, it will show Abraham Lincoln's face instead of the usual marine, and say ''Lincoln A'' in the corner of the message.

Go inside of Isaak's work area. Behind where Isaak stands to brief you on your weapons is a wall; follow the wall left until it ends. You'll be looking at a corner of the room and a desktop (which will hold several artifacts later in the game). Turn around and crouch; nearby on your right is a rectangular piece of machinery on the floor. Look closely at it near the top to see a hidden message!

''UNREAL 2 KICKS ASS OVER ALL OTHER GAMES SO THERE''