Planet Difficulty Tiers adds an editorially assigned difficulty label and a score to the starmap tooltip and Factoriopedia for every loaded planet. It does not generate ratings automatically.
What it displays:
Planet difficulty - colored ●T1 through ●T6.
Difficulty score - N/100.
Unknown planets are shown as Not rated until you assign them a score yourself (if any planet from a mod hasnt been evaluated, please send it my way and I will fix it. I would be very grateful for that kind of help).
Planet difficulty is intended to describe initial landing, long-term base maintenance, and ongoing hazards, not the size of a technology tree or something like that. All these 3 parameters combine to determine the final difficulty and tier of a planet.
Tier - Score - Meaning
T1 - 0–19 - Easy
T2 - 20–34 - Manageable
T3 - 35–49 - Moderate
T4 - 50–69 - Challenging
T5 - 70–84 - Difficult
T6 - 85–100 - Extreme
Built-in scored planet catalogue:
The scores below are provisional editorial assessments, i am not benchmarked or verified them by playing every planet (but the majority were, in fact, checked). The presence of any planet on this list does not mean that this mod includes it - it simply adds values for it, provided that the corresponding mods are enabled in your game.
Vanilla planets:
- Nauvis: 4 + 5 + 10 - 19/100 (T1)
- Vulcanus: 9 + 6 + 5 - 20/100 (T2)
- Fulgora: 11 + 8 + 5 - 24/100 (T2)
- Gleba: 17 + 19 + 14 - 50/100 (T4)
- Aquilo: 23 + 29 + 0 - 52/100 (T4)
Other modded planets and surfaces:
- Abacayba: 29 + 30 + 29 - 88/100 (T6)
- Aiur: 17 + 21 + 26 - 64/100 (T4)
- Apia: 12 + 12 + 5 - 29/100 (T2)
- Arcanyx: 16 + 19 + 14 - 49/100 (T3)
- Athos: 13 + 19 + 0 - 32/100 (T2)
- Cabodle: 23 + 33 + 15 - 71/100 (T5)
- Carna: 18 + 22 + 19 - 59/100 (T4)
- Carnova: 13 + 14 + 8 - 35/100 (T3)
- Castra Prime: 20 + 21 + 26 - 67/100 (T4)
- Cerys: 13 + 10 + 0 - 23/100 (T2)
- Char: 18 + 22 + 26 - 66/100 (T4)
- Corrundum: 16 + 17 + 10 - 43/100 (T3)
- Crucible: 15 + 14 + 0 - 29/100 (T2)
- Cubium: 11 + 12 + 0 - 23/100 (T2)
- DPS: 8 + 8 + 0 - 16/100 (T1)
- Eneas: 5 + 7 + 0 - 12/100 (T1)
- Ferrum: 17 + 17 + 0 - 34/100 (T2)
- Foliax: 15 + 22 + 0 - 37/100 (T3)
- Forgeworld: 16 + 22 + 0 - 38/100 (T3)
- Froodara: 12 + 16 + 0 - 28/100 (T2)
- Frozeta: 23 + 28 + 0 - 51/100 (T4)
- Helios: 28 + 29 + 28 - 85/100 (T6)
- Hephaestus: 17 + 20 + 11 - 48/100 (T3)
- Igrys: 8 + 9 + 0 - 17/100 (T1)
- Janus Reshifted: 9 + 14 + 0 - 23/100 (T2)
- K2 Planet: 16 + 17 + 0 - 33/100 (T2)
- Khemia: 13 + 16 + 0 - 29/100 (T2)
- Lignumis: 5 + 7 + 0 - 12/100 (T1)
- Linox: 24 + 30 + 0 - 54/100 (T4)
- Maraxsis: 11 + 13 + 5 - 29/100 (T2)
- Moshine: 7 + 6 + 0 - 13/100 (T1)
- Muluna: 8 + 10 + 0 - 18/100 (T1)
- Muria: 19 + 22 + 17 - 58/100 (T4)
- Naufulglebunusilo: 10 + 8 + 18 - 36/100 (T3)
- Nekohaven: 8 + 12 + 13 - 33/100 (T2)
- Nexus: 12 + 15 + 0 - 27/100 (T2)
- Nulla: 16 + 17 + 19 - 52/100 (T4)
- Obsidiax: 22 + 24 + 0 - 46/100 (T3)
- OMNI: 13 + 15 + 17 - 45/100 (T3)
- Omnia: 14 + 15 + 0 - 29/100 (T2)
- Panglia: 18 + 24 + 18 - 60/100 (T4)
- Paracelsin: 21 + 23 + 0 - 44/100 (T3)
- Pelagos: 12 + 13 + 0 - 25/100 (T2)
- Planetaris: Arig: 19 + 20 + 0 - 39/100 (T3)
- Planetaris: Hyarion: 18 + 18 + 23 - 59/100 (T4)
- Planetaris: Tellus: 21 + 28 + 24 - 73/100 (T5)
- Pyroclast: 11 + 12 + 0 - 23/100 (T2)
- Rabbasca: 13 + 16 + 4 - 33/100 (T2)
- Reigia: 7 + 11 + 0 - 18/100 (T1)
- Ribbonia: 18 + 19 + 0 - 37/100 (T3)
- Rubia: 15 + 22 + 15 - 52/100 (T4)
- Rustara: 18 + 23 + 0 - 41/100 (T3)
- Secretas: 18 + 17 + 22 - 57/100 (T4)
- Shattered Planet: 14 + 27 + 5 - 46/100 (T3)
- Shchierbin: 8 + 15 + 0 - 23/100 (T2)
- Tchekor: 14 + 18 + 14 - 46/100 (T3)
- Tenebris Prime: 22 + 27 + 17 - 66/100 (T4)
- Terra Palus: 17 + 18 + 22 - 57/100 (T4)
- Velora: 9 + 11 + 12 - 32/100 (T2)
- Vesta: 15 + 16 + 0 - 31/100 (T2)
- Virentis: 12 + 16 + 12 - 40/100 (T3)
- Zzhora: 9 + 18 + 0 - 27/100 (T2)
Planets and surfaces from multi-location mods:
- Circa: 14 + 14 + 15 - 43/100 (T3)
- Dea Dia: 17 + 23 + 0 - 40/100 (T3)
- Lemures: 18 + 20 + 15 - 53/100 (T4)
- Mirandus: 11 + 17 + 0 - 28/100 (T2)
- Neumann V: 7 + 9 + 0 - 16/100 (T1)
- Nix: 18 + 20 + 0 - 38/100 (T3)
- Prosephina: 9 + 11 + 0 - 20/100 (T2)
Previously, Outer Rim added a separate surface for Secretas - much like a standard planet, but in the new 2.1 version of Factorio, it no longer seems to be present.
The mod scans all final planet prototypes at the end of the prototype-loading phase. It matches known entries against the planets actual internal ID, supported alternate IDs, and eligible localization tokens. For unknown planets it still shows Not rated, and you can enter any internal ID in the mod setting to rate it.
The /pdt-planets command displays a list of all planets currently active in the game, along with an assessment of their difficulty, as shown in photo 2.