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New Moon Balance Patch - A Mod for Persona 3 FES


v4.0.4 6d
  • BugFix Fixed Tarunda targeting enemies without strength buffs instead of debuffs, resulting in some odd behavior at times (Junpei)
  • BugFix Junpei's stat progression now functions as intended
  • Optimization The priority of certain Or/ And conditionals has been modified to increase performance
I recommend using the Party Skill Editor to correct any issues with Junpei's stats, they skewed away from Strength and Endurance and this update corrects that. Otherwise fully compatible with all saves
v4.0.3 14d BugFix v4.0.2b 14d BugFix v4.0.2 15d Tweak2 Optimization3 Improvement3 BugFix5 v4.0.1 18d Adjustment3 Optimization BugFix3

There's no better way to play Persona 3

1. If you want to use an old save, read this first


If you use New Game or New Game+ you do not have to use the Party Skill Editor.

Alternatively, you can use New Moon Lite™. Lite contains all of the changes from New Moon, except the new party skills, so it is compatible with virtually every save if you aren't comfortable with the above workaround.

2. What is this?

2.1. Summary

The New Moon Balance Patch is an incredibly in-depth, massive overhaul of nearly every active skill, the entire party, and a handful of bosses in Persona 3 FES.

Despite this, New Moon manages to stay faithful to the original Persona 3 experience, carefully altering a variety of different aspects toward similar, yet absolutely superior, gameplay.

The in-depth patchnotes since 3.0 are here (patchnotes).

The 4.0 patchnotes and skill stats: (patchnotes) (spreadsheet)

Complete patchnotes coming soon I just wanna release the damn mod holy hell


  • Rebalanced HP cost and SP costs
  • Generally higher accuracy rates, with some exceptions
  • Higher critical rates for the majority of physical skills
  • Shock/ Freeze rates altered, under 100% for severe, higher for other versions
  • Higher instant kill and status effect rates, now in line with current SMT games
  • Greatly reduced SP cost of certain extremely pricey moves, like Break skills and Megido
  • Cost of certain Fusion Spells reduced to increase their usefulness
  • Physical skills increased in power gradually
  • Buffs/ Debuffs cost slightly more, and can be recast
  • Tetrakarn/Makarakarn cost less, but are now single target
  • Specific physical skills have a minute chance to inflict status effects
  • Almighty skills have a knockdown chance (lower than critical hit rates)


  • Severe multi-target elemental skills, such as Ice Age and Wild Thunder
  • Multi-effect buff and debuff skills, such as Heat Riser and Debilitate
  • Unused passives Magic Skill Up and Phys Skill Up
  • Improved single target instant kill skills
  • Improved status effect moves
  • An almighty physical skill


  • Aigis can now use Fusion Spells, learnable normally by the relevant Personas
  • Vorpal Blade and Weary Thrust have been powered up
  • Aigis has a custom fusion spell animation and optional cut-in (see the "extras" download)
  • The secret boss (only fightable via Mod Menu currently) now functions properly
  • Abaddon has a normal skill progression, like other Personas


  • All Party Members have revised skill progressions, custom skills, and improved leveling
  • Evolved Personas now have an additional resistance
  • Party AI has been altered so that the AI will use any custom skills given to them
  • Healing AI is more likely to use multi-target healing
  • Conserve SP much more likely to use physical skills
  • Power Charge is now usable during Full Assault

2.6. BOSSES:

  • Ultimately, bosses stay consistent to their original vision, with improved AI and tweaks to their movesets relative to universal changes
  • Some notoriously easy fights (Spring of Life girl and her pals) have been redesigned from the ground up


  • Skills now display their damage, accuracy, critical hit, and status effect rates
  • Various skills now have more detailed descriptions
  • Various equipment and weapons clarify which passives they bestow
  • Custom skills utilize animations from Persona 4


  • The Vorpal Blade/ Weary Thrust glitch no longer creates a dummy skill
  • Certain bosses will no longer use Mind Charge/ Tetrakarn when already active (will be backported to other bosses in the future)


New Moon is constantly being worked on. Find an oversight? Is there something you want to see? Leave a message, a comment, a DM, hell even fax me. New Moon is the definitive experience for the Persona 3 enthusiast, and I intend to have it live up to that.

Many more alterations and tweaks are still in store, but fear now, your save data will always be usable from one update to another (you may just have to run the Party Skill Editor every now and then), and if you ever want to stop using the mod you can continue off from where you left.

As of 3.1, I am on vacation, but if you find any issues let me know. Bugfixes take top priority.

4. Previous mods/ videos I made that influenced this

 The Modern Skill Rebalance( v1, v1.1, v1.2) and Faithful Party Rebalance (FPR) mods served as a stepping stone for this project. Check out those vids if you want to see how far we've come.

5. Other mods I recommend in conjunction with New Moon

The following mods were not created by me, but I highly recommend using them with NM:

Shop Everywhere at Night by Tekka

The Answer Healing Clocks by Tekka

The Answer Compendium by Tekka
1-10 of 35
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  • AgentBloon avatar
    AgentBloon Joined 1d ago
    I'm not sure if its a bug with the new update or the party skill editor or just me not doing it correctly but on my already on-going save file junpei still has agilao at level 30, akihiko learning zionga at level 29 even after using the party skill editor. I know I'm on newmoon since junpei has tarunda but it hasnt seem to update the new level requirements for those skills.
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  • Stabadados avatar
    Stabadados Joined 9y ago
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    Great work on 4.0, thanks for giving me another excuse to replay p3fes. I can't wait for 5.0 to give me another replay in 202X :D
    • Thanks x 1
    The Oathkeeper
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  • Lorde_Mata avatar
    Lorde_Mata Joined 10d ago
    I tried installing this with aemulus but I can't get it to work,I used the I used the party skill editor to modify my save file where everyone but the mc is lv 19,and yukari got magaru and junpei got double fangs so at least that part worked,but if I go into battle the skills still show like in vanila so something isn't working as intended,my output folder is a mods folder in the same folder where my P3FES iso is and where my ELF file is and I'm using PCSX2
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  • Freekillm249 avatar
    Freekillm249 Joined 11y ago
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    I gotta say, I'm having a blast here, the AI heals way better now, I'm lvl 38 now and I'm hoping to get to lvl 50 soon, that's where the fun starts to happen, hell, I'm having fun right now, Yukari doesn't have that massive level gap on the early game.

    Also, I would like to point out that Junpei does learn Tarunda properly, but when I set him to support, he uses Tarunda on our party instead of the enemy, did I mess up the instalation somewhere?
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  • nyervek avatar
    nyervek Joined 2mo ago
    I was waiting for this release to replay my favorite game.

    Thank you for your hard work!

    • Thanks x 1
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  • Really enjoyed this patch so far! I've only encountered one big where Koro doesn't learn desecrate at level 70, he reaches the level and then nothing happens, it just shows brave blade as his next available skill.
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  • Lyzder avatar
    Lyzder Joined 1y ago
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    2mo 2mo
    I'd love to try this mod, it seems so good! But sadly I have to play on phone so I can't use Aemelus and I don't see a way to build an iso since MC doesn't build anything outside the data folder. But I'll make sure to keep this mod in mind if I get the chance
    • Thanks x 1
    Live and love avatar
    Live and love
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  • thatifalover avatar
    thatifalover Joined 1y ago
    187 points Ranked 73,471st
    Hi, I thought I would bring this to your attention since you've added buff/debuff recasting. Critical-increasing skills can not be recast. Thanks for all the work you do for P3! Just donated to you on ko-fi. 
    • Helpful x 1
    • Thanks x 1
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  • Kris! avatar
    Kris! Joined 4mo ago
    95 points Ranked 54,875th
    mitsuru just waits instead of doing a normal attack when told to conserve sp, same happens with yukari though only sometimes for some reason, cant tell if this is because of full moon or if it was like this in vanilla
    Princess of dissapointment
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  • i noticed that the regenerate,invigorate and spring of life skills not work aka i wont get hp and sp every turn i hope you can look into whats wrong because when i turned off the mod the skills worked again thank you
    • Helpful x 1
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