To qualify as a good level, a WAD must:
Note that I am not saying that the other WADs are not good, just that I consider these good. There are many of the other levels I like too, it is just these are the levels I think everyone will appreciate.
Note: In the Misc column:
| File | File Size | Game | Author | Size | Hard | Overall | Misc |
| 11NIDECK.ZIP | 62 | Doom 1 | 7 | 6 | 6 | SCD, SkLevs | |
| 1FIFFY6.ZIP | 55 | Doom 1 | 6 | 7 | 6 | SCD, SkLevs | |
| 1FIFFY7.ZIP | 238 | Doom 1 | 5 | 5 | 6 | SCD, SkLevs | |
| 1KILLXTR.ZIP | 36 | Doom 1 | 5 | 7 | 7 | SCD, SkLevs | |
| 666.ZIP | 39 | Doom 1 | 5 | 6 | 7 | SCD, SkLevs | |
| ABYSS.ZIP | 35 | Doom 1 | 5 | 7 | 6 | S | |
| ACASTLE2.ZIP | 56 | Doom 1 | 5 | 5 | 6 | S, SkLevs | |
| AE_PROJR.ZIP | 35 | Doom 1 | 6 | 5 | 7 | SCD, SkLevs | |
| ALCATRAZ.ZIP | 812 | Doom 1 | 6 | 4 | 6 | SCD, SkLevs | |
| AMBUSH.ZIP | 30 | Doom 1 | 4 | 6 | 6 | S, SkLevs | |
| ANDER.ZIP | 117 | Doom 1 | 7 | 6 | 7 | S, SkLevs | |
| ANTEROOM.ZIP | 50 | Doom 1 | 6 | 5 | 6 | SCD, SkLevs | |
| APHEXIUS.ZIP | 49 | Doom 1 | 7 | 6 | 6 | SC | |
| ARACHNA.ZIP | 76 | Doom 1 | 6 | 6 | 8 | SCD, SkLevs | |
| ASCENT.ZIP | 73 | Doom 1 | 6 | 5 | 6 | SCD | |
| ASLTHQ.ZIP | 117 | Doom 1 | 7 | 3 | 6 | SCD, SkLevs | |
| BARREL2.ZIP | 54 | Doom 1 | 5 | 7 | 7 | SC, SkLevs | |
| BASILICA.ZIP | 333 | Doom 1 | 7 | 7 | 9 | S | |
| BEN.ZIP | 61 | Doom 1 | 6 | 4 | 6 | S, SkLevs | |
| BIGTRAP.ZIP | 65 | Doom 1 | Shof B | 7 | 6 | 6 | S, SkLevs |
| BLAHBLAH.ZIP | 54 | Doom 1 | 5 | 4 | 6 | SCD, SkLevs | |
| BUNKER.ZIP | 90 | Doom 1 | 7 | 6 | 8 | SCD, SkLevs | |
| MEGAPACK.ZIP | 112 | Doom 1 | 2x(6-7) | 6 | 7 | SCD, SkLevs | |
| UAC_DEAD.ZIP | 145 | Doom 1 | 8 | 5 | 7 | SCD, SkLevs |
Note that I don't check this list as thoroughly as the main overall list, so it may not be accurate.