Doom
Map all lines:
Pause game play and press Triangle(2), L2,R2, L2, R2, R1, Square. Toconfirm correct code entry, a message will appear on the bottomof the viewing window and will disappear the game is resumed.All walls and boundaries will appear on the map for the currentstage.
Map all items:
Pause game play and press Triangle(2), L2,R2, L2, R2, R1, Circle. Toconfirm correct code entry, a message will appear on the bottomof the viewing window and will disappear the game is resumed.All objects including enemies, items, weapons, and secret switcheswill appear on the map as blue triangles.
Invincibility:
Pause game play and press Down, L2, Square,R1, Right, L1, Left, Circle.To confirm correct code entry, a message will appear on the bottomof the viewing window and will disappear the game is resumed.Your character will be invincible, however unlike the invulnerabilitypower-up, your screen will not turn white.
Weapons, ammunition, and keys:
Pause game play and press X, Triangle,L1, Up, Down, R2, Left(2).To confirm correct code entry, a message will appear on the bottomof the viewing window and will disappear the game is resumed.All weapons, ammunition for them, and keys for current level willbe available.
Level select:
Pause game play and press Right, Left,R2, R1, Triangle, L1, Circle,X. If the code was entered correctly, a menu will appearin the top half of the viewing window. Press Left and Rightto select a level, and confirm your entry with Square,Circle, Triangle, or X.
Transparent walls:
Pause game play and press L1, R2, L2,R1, Right, Triangle, X, Right.Your character may now see through one layer of wall or sprites.
Random levels (version 1.0):
Enter DOOMMNLxxx or H3LL1SHxxx, wherexxx the same character such as !!! or 666, at thepassword screen. The game will start at a random level with anunusual amount of ammunition, armor, and life.
Soundtrack:
Play track two of the game disc in an audio CD playerto hear music from the game.
| Level | Health | Armor | Weapons | Password | Title |
| Ultimate Doom |
| 02 | 125% | 200% | All | CR!3WDD3DB | Plant |
| 03 | 200% | 200% | All | 3JJCMK8W64 | Toxin Refinery |
| 04 | 200% | 200% | All | 03LTJ0Y!02 | Command Control |
| 05 | 200% | 200% | All | H33!1HFTHK | Phobos Lab |
| 06 | 200% | 200% | All | 04MSKZX9Z1 | Central Processing |
| 07 | 125% | 200% | All | YTTLCXXLXV | Computer Station |
| 08 | 200% | 200% | All | 09SMBY04YW | Phobos Anomaly |
| 09 | 200% | 200% | All | 7KKBLD7V53 | Diemos Anomaly |
| 10 | 100% | 200% | All | FM4217GSGJ | Containment Area |
| 11 | 200% | 200% | All | H!!3WDGLDB | Refinery |
| 12 | 200% | 200% | All | 07QPDW26WY | Deimos Lab |
| 13 | 350% | 150% | 12346 | WTXQ9C3W12 | Command Center |
| 14 | 100% | 200% | 123456 | RBR4G!LDLN | Halls of the Damned |
| 15 | 300% | 175% | 1236 | WTXQ9C3W11 | Spawning Vats |
| 16 | 50% | 75% | 1234567 | 548C7DFWYX | Hell Gate |
| 17 | 100% | 125% | 1234567 | JOC89DZPQS | Hell Keep |
| 18 | 100% | 125% | 1234567 | JGB9CT0NRT | Pandemonium |
| 19 | 100% | 200% | All | 9QLTKR0!02 | House of Pain |
| 20 | 100% | 200% | All | 78M63QX921 | Unholy Cathedral |
| 21 | 200% | 200% | All | S!61FHVQJG | Mt. Erebus |
| 22 | 200% | 200% | All | 33QHFTT6WY | Limbo |
| 23 | 200% | 200% | All | VBGQPJ!Y46 | Tower of Babel |
| 24 | 200% | 200% | All | ZYKTLW7V53 | Hell Beneath |
| 25 | 200% | 200% | All | 0DJSM4HW64 | Perfect Hatred |
| 26 | 200% | 200% | All | LS5YPTCRKH | Sever the Wicked |
| 27 | 200% | 200% | All | ZDJSMVRW64 | Unruly Evil |
| 28 | 200% | 200% | All | 1YKTX4QV53 | Unto the Cruel |
| 29 | 200% | 200% | All | XKF6R8LZ97 | Twilight Descends |
| 30 | 200% | 200% | All | DJX07Q4HTR | Threshold of Pain |
| Doom II |
| 31 | 200% | 200% | All | C0W1!QNJQS | Entryway |
| 32 | 125% | 200% | All | VM!3V1D3DB | Underhalls |
| 33 | 150% | 200% | All | W394W2DMFC | The Gantlet |
| 34 | 150% | 200% | All | ZQ58ZKJRKH | The Focus |
| 35 | 175% | 200% | All | Z758ZKJ8KH | The Waste Tunnels |
| 36 | 200% | 200% | All | 5C2V3DQBNL | The Crusher |
| 37 | 200% | 200% | All | NCKBLX7V53 | Dead Simple |
| 38 | 200% | 200% | All | 1Q580FCRKH | Tricks and Traps |
| 39 | 100% | 200% | All | HTMSKZZ9Z1 | The Pit |
| 40 | 200% | 200% | All | WS58ZKCRKH | Refueling Base |
| 41 | 200% | 200% | All | CSNRG2W820 | O of Destruction! |
| 42 | 200% | 200% | All | WT670JBQJG | The Factory |
| 43 | 200% | 200% | All | DQLTJ1Y!02 | The Inmost Dens |
| 44 | 100% | 200% | All | 2N94VFFMFC | The Suburbs |
| 45 | 200% | 200% | All | CQLTJ0Y!02 | Tenements |
| 46 | 200% | 200% | All | WR492GDSGJ | The Courtyard |
| 47 | 200% | 200% | All | PFFGXH3777 | The Citadel |
| 48 | 200% | 200% | All | JWCJV2X479 | Nirvana |
| 49 | 200% | 200% | All | CJJTM35964 | The Catacombs |
| 50 | 200% | 200% | All | M!T174XZXV | Barrels of Fun |
| 51 | 200% | 200% | All | 5770MX2CDF | Bloodfalls |
| 52 | 200% | 200% | All | YJLW3PPCPM | The Abandoned Mines |
| 53 | 200% | 200% | All | DKKBLM58J3 | Monster Condo |
| 54 | 200% | 125% | All | 7L3!266DJK | Redemption Denied |
| Bonus levels |
| 55 | 200% | 200% | All | RCMSKZX9Z1 | Fortress of Mystery |
| 56 | 200% | 200% | All | 8J94VFHMFC | The Military Base |
| 57 | 200% | 200% | All | RJSMBY04YW | The Marshes |
| 58 | 200% | 200% | All | 8K!3WDGLDB | The Mansion |
| 59 | 200% | 200% | All | RKTLCXZ3XV | Club Doom |
Playing in linked mode with only one disc:
Note: Sony does not recommend removing a spinningdisc from the Playstation.
Connect two Playstations with the linkcable, and power onboth systems. Begin Doom on Playstation 1. Select Deathmatch ora cooperative game. Playstation 1 should try to connect to Playstation2. Wait a few seconds, remove the disc from the Playstation 1,and start the game on Playstation 2. Enter all selections identicallyto Playstation 1 and begin playing.The game will hang from time to time. At these points, swap thedisc to the other Playstation after waiting a few seconds beforeremoving the disc.