Level Skip
For your password, enter "H 2 F 2." Any time you wish to skip to the end of a level, press Start.
Unlimited lives
Enter B32R as a password.
Level - Password
2 - 3KNT
3 - MDWH
4 - 2S3W
5 - 1Z5C
6 - 1BCD
Cheat Mode
Press Q + E + T to enable cheat mode. Then, enter one of the following codes to activate the corresponding cheat function.
Code Effect
I - Invincibility
U - Disable invincibility
A + S + D + F + G - Weapon select
N - Level skip
W + R + Y - Disable cheat mode
1 EABT-AA4W MASTER CODE-MUST BE ENTERED
2 AB8A-AACW Special attack uses no energy
3 AB8A-ANCW Special attack uses 1/2 as
much energy
4 R1DT-A60R Normal attacks use no energy
5 P1DT-BD0R Normal attacks gain energy instead
of losing it...
All Difficulty Modes:
1 D2CT-CADY Game clock runs faster
2 SACT-CADY Game clock runs slower
3 8ACT-CADY Game clock runs much slower
4 AACT-CA6J Game clock frozen (no time limit)
5 AJBT-AAEY Start at stage 2 instead of stage 1
6...
Cheat Mode
Pause game play, select "Options" then "Cheats". Enter one of the following case-sensitive codes to activate the corresponding cheat function.
Invincibility
Enter everythingproof as a password.
Big Smoothy
Enter xlsmoothy as a password.
Full upgrades
Enter herotime as a...
All Combos
At the "Bonus Content" menu, select the "Enter Code" option. Enter the code at the "Secret Cheat" screen to unlock the code. Then enable the code at the "Secrets" menu.
Enter Swampfire, Gwen, Kevin, Ben
Infinite Aliens
At the "Bonus Content" menu, select the "Enter Code"...
Various Codes
Pause game play. Select the "Cheats" option, then enter one of the following codes to activate the corresponding cheat function.
+1 million DNA
cash
AI does double damage, player does half damage
hard
Energy regeneration
energy
Fourarms
classic
Health...
Checkpoint advantage
When you reach a check point ( a cross on your map) you can save (using the + menu). After you save click + again and select reload from last checkpoint it should load where you just saved you will now have full health.
Bonus rounds
Complete the indicated task to get to the bonus round on the indicated stage.
Stage 1: Get all the orange pellets at the top. A round circle below them will light up. Get the pinball on the circle before the lights disappear.
Stage 2: There are three worm aliens on the left...
1 Million Points + Bonus Ball
Get to the bonus round with skulls and green aliens. Kill everything except for one skull. Keep going until a pteradactyl appears. Hit the pteradactyl with the ball to get a million points and a bonus ball once the stage is cleared.
Bonus points
Locate the rooms in the ships that contain green faces on the floor. Collect 500 points for killing them, then wait until they re-appear. Kill them again for another 500 points.
Unlimited Lives
Start game play in two player mode and obtain a high score for both players. Intentionally have one of the players lose all their lives and enter ALIEN as a name on the high score screen. The corresponding player will have unlimited lives when game play continues.
Continue
To use this trick, you must play as Scooter, and you must have enough energy to self-destruct. When your life gets to zero, self-destruct and you can continue the game without dying.
Note: You must repeat this code each time you're about to die.
Level Skip
On the options screen, use Controller Two and press C, Up, Right, Down, Left, A, Right, Down. To activate, pause the game while playing and press C, A, B to skip to the next level.
017-97B-E6A Start with Flame Thrower
077-97B-E6A Start with Crush Gun
087-97B-E6A Start with Homing shot
097-97B-E6A Start with Spread shot
052-B1B-E6E Get 5 smart bombs after you die
092-B1B-E6E Get 9 smart bombs after you die
007-E2C-19E Infinite smart bombs...
Alien 3
FA7-68E-4C1 Almost infinite energy
04B-27E-E66 Start with 4 tries
06B-27E-E66 Start with 6 tries
0AB-27E-E66 Start with 10 tries
FA6-92E-4C1 Infinite tries
8E4-42D-195 Start with 1/2 energy
00F-9CD-E65 Infinite shots per clip on pick-up
FAB-45D-4C1...
ALIEN TRILOGY
from Acclaim
STORY
In the not-too distant future, successful space colonization has become
routine. The quaint concept of nations is a remote memory. The one
organization to witch all humans belong is the Company. All material needs are...