| E1M1 Hangar | | — | — |
|---|
| E1M2 Nuclear Plant | | — | |
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| E1M3 Toxin Refinery | | | |
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| E1M3 Toxin Refinery (Secret Exit) | | | |
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| E1M4 Command Control | | | |
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| E1M5 Phobos Lab | | | |
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| E1M6 Central Processing | | | |
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| E1M7 Computer Station | | | |
|---|
| E1M8 Phobos Anomaly | | — | — |
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| E1M9 Military Base | | | |
|---|
| E1M10 Sewers | | | — |
|---|
| E2M1 Deimos Anomaly | | | |
|---|
| E2M2 Containment Area | | | |
|---|
| E2M3 Refinery | | | |
|---|
| E2M4 Deimos Lab | | | — |
|---|
| E2M5 Command Center | | | |
|---|
| E2M5 Command Center (Secret Exit) | | — | — |
|---|
| E2M6 Halls of the Damned | | | |
|---|
| E2M7 Spawning Vats | — | — | — |
|---|
| E2M8 Tower of Babel | | — | — |
|---|
| E2M9 Fortress of Mystery | | | — |
|---|
| E3M1 Hell Keep | | | |
|---|
| E3M2 Slough of Despair | | | — |
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| E3M3 Pandemonium | | | — |
|---|
| E3M4 House of Pain | | — | — |
|---|
| E3M5 Unholy Cathedral | | — | — |
|---|
| E3M6 Mt. Erebus | | | — |
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| E3M6 Mt. Erebus (Secret Exit) | | | — |
|---|
| E3M7 Limbo | | — | — |
|---|
| E3M8 DIS | | | — |
|---|
| E3M9 Warrens | | | — |
|---|
| E4M1 Hell Beneath | | | |
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| E4M2 Perfect Hatred | | | — |
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| E4M2 Perfect Hatred (Secret Exit) | — | — | — |
|---|
| E4M3 Sever Thee Wicked | | — | — |
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| E4M4 Unruly Evil | — | — | — |
|---|
| E4M5 They Will Repent | — | — | — |
|---|
| E4M6 Against Thee Wickedly | — | — | — |
|---|
| E4M7 And Hell Followed | — | — | — |
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| E4M8 Unto the Cruel | — | — | — |
|---|
| E4M9 Fear | — | — | — |
|---|
