=============================================================================== Bloodborne: Quick Tutorial on Gem Modding Guide by Aladore384 contact@aladore.fr =============================================================================== Before we start, friendly advice: MAKE BACKUPS!!! =============================================================================== Gems are written twice within the savedata: 1. Gem information 2. Gem location The latter doesn't matter, what you want to find is the former. Find the gem, and modify its attributes. A typical gem looks like this (written in little endian) : 06 0E 81 C0 / CC 0F 10 80 / 01 00 00 00 / 02 00 00 00 / B3 EA 01 00 / 02 A1 00 00 / FF FF FF FF / 06 0E 81 C0: don't touch it, it's the ID. Each gem has its own ID. CC 0F 10 80: gem's source, here it's Watchers Boss 01 00 00 00: quantity, always leave at 01 00 00 00 02 00 00 00: shape (01 radial, 02 triangle, 04 waning, 08 circlet, 3F droplet) From there, each 4 bytes is a single effect. If you want only 1 effect, fill the first 4 bytes with the associated numbers, and the effect slots you want empty with FF FF FF FF. B3 EA 01 00: effect 1 (here Bolt 27.2%) 02 A1 00 00: effect 2 (here Stamina cost 3.2%) FF FF FF FF: effect 3 (here empty) =============================================================================== Gem Sources CC 0F 10 80: Watchers Boss C0 0F 10 80: Watchers Mob 76 0B 10 80: Blood-starved Beast Boss C6 06 10 80: Brainsucker Boss BC 06 10 80: Brainsucker Mob 31 10 10 80: Pthumerian Elder Boss ED 12 10 80: Headless Bloodletting Beast Boss =============================================================================== Primary Effects 9B EE 01 00: 27.2% phys (9C EE 01 00 = 28.1%) E3 E2 01 00: 27.2% arc (E4 E2 01 00 = 28.1%) CB E6 01 00: 27.2% fire (CC E6 01 00 = 28.1%) B3 EA 01 00: 27.2% bolt (B4 EA 01 00 = 28.1%) 83 F2 01 00: 23.6% atk (84 F2 01 00 = 24.4%) FA DE 01 00: 31.5% blood (FB DE 01 00 = 32.6% , FC DE 01 00 = 33.8%) 13 DB 01 00: 32.6% thrust (14 DB 01 00 = 33.8%) 2B D7 01 00: 32.6% blunt (2C D7 01 00 = 33.8%) 1B AA 02 00: rank 19 slow poison (18.1) (1C AA 02 00 = rank 20) 7B 1D 02 00: rank 19 rapid poison (21.7) (7C 1D 02 00 = rank 20) 7B 9A 02 00: rank 19 beasthunter (32.6%) (7C 9A 02 00 = rank 20) C3 11 02 00: rank 19 kinhunter (32.6%) (C4 11 02 00 = rank 20) 8B 44 02 00: rank 19 phys fool (34.4%) (8C 44 02 00 = rank 20) 43 50 02 00: rank 19 nourishing fool (29%) (44 50 02 00 = rank 20) 2B 54 02 00: rank 19 nourishing poor (30.8%) (2C 54 02 00 = rank 20) 97 DE 01 00: 28.7% blood (98 DE 01 00 = 29.7%) 9B D5 01 00: 11.7% Blunt (9C D5 01 00 = 12.2%) 0B ED 01 00: 9.8% Phys (0C ED 01 00 = 10.1%) 44 05 02 00: 65 arc scaling F0 F9 01 00: 65 str scaling =============================================================================== Secondary Effects 3F 33 00 00: +7.3 blood (40 33 00 00 = 7.5) 53 38 00 00: +72.5 arc (54 38 00 00 = 75) 28 37 00 00: +15arc 10 3B 00 00: +15fire F8 3E 00 00: +15bolt E0 42 00 00: +15phys D0 98 00 00: 6% open foes =============================================================================== Curses 04 A1 00 00: stamina costs 3.4% 03 A1 00 00: stamina costs 3.3% 02 A1 00 00: stamina costs 3.2% 01 A1 00 00: stamina costs 3% 00 A1 00 00: stamina costs 2.9% 9F A0 00 00: stamina costs 1.5% 9E A0 00 00: stamina costs 1.4% =============================================================================== N.B.: Runes seem to work in the same fashion. For you, here is data for Guidance rune. The first 4 bytes prolly differ from one save to another. I suggest locating it with the second set of 4 bytes. You want to modify the last set of 4 bytes : Tier 1: 85 01 80 C0 / 40 96 01 80 / 02 00 00 00 / 01 00 00 00 / 08 69 11 00 Tier 2: 8D 01 80 C0 / 41 96 01 80 / 02 00 00 00 / 01 00 00 00 / 09 69 11 00 Tier 3: XX XX XX XX / XX 96 01 80 / 02 00 00 00 / 01 00 00 00 / 0A 69 11 00 =============================================================================== Additional notes by Abnaxis So, I've had some adventures trying to start a character with editted-in Beast Claws and Beast's Embrace, and I have some info to add to your OP (unless you'd rather make a separate thread for Caryll runes). First, definition: when I say "word" I'm referring to the groups of 4 bytes because...well, the CS definition of "word". Second, correction: the third word of a gem is not quantity, as you state in the OP. For gems the third word is always 01 00 00 00, but for Caryll runes it's always 02 00 00 00. That's important if, like I was, you're trying to transform a gem into a rune. Third, the fourth word of a Caryll rune also gives it's "shape." When you look at a rune in your inventory, it has a "type" which can be either "-" for normal runes (Lake, Formless Oedon, etc) or "Oath" for covenant runes (like Impurity, Beast's Embrace, Milkweed, etc). In my experience, if you try to change the effect of a normal rune to that of a Beast's Embrace rune, the Rune winds up labelled "Lake" unless you change the fourth word Finally, the effects on Milkweed and Beast's Embrace are weird. If you create a BE rune with the main effect alone--81 78 20 00--the rune WILL transform your character model and WILL give a +15 bonus to beasthood while equipped, but WILL NOT change any of your animations nor will it change your move-set when you have the Beast Claw equipped. In order to get the full BE change to animations and move-set, you have to add 5 effects to the rune: 81 78 20 00 / 82 78 20 00 / 83 78 20 00 / 84 78 20 00 / 85 78 20 00. The Milkweed rune is similar for the Kos Parasite, though you only need 3 effects instead of 5. Adding 69 7C 20 00 / 6A 7C 20 00 / 6B 7C 20 00 is what it takes to get full use out of Milkweed. =============================================================================== Credits anonymous contributor: finding the Droplet shape data, providing more data manulbrona: various primary effects data Ninjutsu Hombre (JD): providing more data Abnaxis: for giving additional information/corrections =============================================================================== Data from manulbrona : 1B AA 02 00: rank 19 slow poison (18.1) (1C AA 02 00 = rank 20) 7B 1D 02 00: rank 19 rapid poison (21.7) (7C 1D 02 00 = rank 20) 7B 9A 02 00: rank 19 beasthunter (32.6%) (7C 9A 02 00 = rank 20) C3 11 02 00: rank 19 kinhunter (32.6%) (C4 11 02 00 = rank 20) 8B 44 02 00: rank 19 phys fool (34.4%) (8C 44 02 00 = rank 20) 43 50 02 00: rank 19 nourishing fool (29%) (44 50 02 00 = rank 20) 2B 54 02 00: rank 19 nourishing poor (30.8%) (2C 54 02 00 = rank 20) =============================================================================== More data from anonymous contributor : gem source id : 58 06 10 80 = fire sage mob BC 06 10 80 = brainsucker mob C6 06 10 80 = brainsucker boss 78 0B 10 80 = BSB boss A2 0C 10 80 = Silverbeast boss 74 0D 10 80 = ebrietas boss BD 0F 10 80 = madman mob (corpse) CC 0F 10 80 = watchers boss 31 10 10 80 = elder boss 53 11 10 80 = undead giant boss( canon ) 1A 12 10 80 = abhorant beast boss 88 12 10 80 = loran darkbeast boss ED 12 10 80 = HBLB boss B4 13 10 80 = amygdala boss 0E 14 10 80 = bps boss 16 7F 10 80 = bonus room coffin ( pthumeru depth 5 ) E8 7F 10 80 = bonus room coffin ( loran depth 5 ) E9 7F 10 80 = bonus room coffin ( loran depth 5 ) 4C 80 10 80 = bonus room coffin ( isz depth 5 ) gem shape : 01 00 00 00 = radial 02 00 00 00 = triangle 04 00 00 00 = waning 08 00 00 00 = circle 3F 00 00 00 = droplet gem effect : ( listed in chonological digits order ) 3C 33 00 00 = +6.5 BLOOD 3E 33 00 00 = +7 BLOOD 3F 33 00 00 = +7.3 BLOOD 40 33 00 00 = +7.5 BLOOD 01 34 00 00 = +20.1 BLOOD 02 34 00 00 = +21 BLOOD 03 34 00 00 = +21.9 BLOOD 04 34 00 00 = +22.8 BLOOD 05 34 00 00 = +23.6 BLOOD 06 34 00 00 = +24.5 BLOOD 07 34 00 00 = +25.4 BLOOD 08 34 00 00 = +26.3 BLOOD 28 37 00 00 = +15 ARC 51 38 00 00 = +67.5 ARC 52 38 00 00 = +70 ARC 53 38 00 00 = +72.5 ARC 54 38 00 00 = +75 ARC B6 38 00 00 = +77 ARC B7 38 00 00 = +79.8 ARC B8 38 00 00 = +82.5 ARC 10 3B 00 00 = +15 FIRE 6F 3B 00 00 = +28.1 FIRE 71 3B 00 00 = +30.4 FIRE 72 3B 00 00 = +31.5 FIRE 73 3B 00 00 = +32.6 FIRE 39 3C 00 00 = +67.5 FIRE 3A 3C 00 00 = +70 FIRE 3B 3C 00 00 = +72.5 FIRE 3C 3C 00 00 = +75 FIRE 9D 3C 00 00 = +74.3 FIRE 9E 3C 00 00 = +77 FIRE 9F 3C 00 00 = +79.8 FIRE A0 3C 00 00 = +82.5 FIRE F6 3E 00 00 = +14 BOLT F8 3E 00 00 = +15 BOLT 59 3F 00 00 = +30.4 BOLT 5A 3F 00 00 = +31.5 BOLT 5B 3F 00 00 = +32.6 BOLT 84 40 00 00 = +71.5 BOLT 85 40 00 00 = +74.3 BOLT 86 40 00 00 = +77 BOLT 87 40 00 00 = +79.8 BOLT 88 40 00 00 = +82.5 BOLT 42 43 00 00 = +18.9 PHYSICAL E0 42 00 00 = +15 PHYSICAL A1 43 00 00 = +24.2 PHYSICAL A6 43 00 00 = +29.4 PHYSICAL A7 43 00 00 = +30.5 PHYSICAL A8 43 00 00 = +31.5 PHYSICAL 0A 44 00 00 = +42 PHYSICAL 0B 44 00 00 = +43.5 PHYSICAL 0C 44 00 00 = + 45 PHYSICAL 38 6E 00 00 = ATK DOWN -7.6% 39 6E 00 00 = ATK DOWN -7.9% AA 85 00 00 = ATK BEAST DOWN -11.3% 78 8D 00 00 = ATK KIN DOWN -10.5% 79 8D 00 00 = ATK KIN DOWN -10.9% 7C 8D 00 00 = ATK KIN DOWN -12.2% CD 98 00 00 = 5.4% OPEN FOES D0 98 00 00 = 6% OPEN FOES D1 98 00 00 = 6.5% RALLY D2 98 00 00 = 6.5% RALLY D3 98 00 00 = 6.7% RALLY 9E A0 00 00 = STAM COST +1.4% 9F A0 00 00 = STAM COST +1.5 00 A1 00 00 = STAM COST +2.9% 01 A1 00 00 = STAM COST +3% 02 A1 00 00 = STAM COST +3.2% 03 A1 00 00 = STAM COST +3.3% 04 A1 00 00 = STAM COST +3.4% 84 A4 00 00 = 5.2% CHARGE ATK UP 85 A4 00 00 = 5.4% CHARGE ATK UP E9 A4 00 00 = 12.2% CHARGE ATK UP EA A4 00 00 = 12.6% CHARGE ATK UP EB A4 00 00 = 13.1% CHARGE ATK UP EC A4 00 00 = 13.5 % CHATGE ATK UP B8 AC 00 00 = HP DEPLETE -8 BB AC 00 00 = HP DEPLETE -9 3D B0 00 00 = 2.7% BOOST RALLY A2 B0 00 00 = 6.3% BOOST RALLY 8A B4 00 00 = WPN DURA UP +12.6 8B B4 00 00 = WPN DURA UP +13.1 8C B4 00 00 = WPN DURA UP + 13.5 71 B8 00 00 = WPN DURA DOWN -60.8 72 B8 00 00 = WPN DURA DOWN -63 07 C1 00 00 = 25% PHYSICAL NEAR DEATH 08 C1 00 00 = 26% PHYSICAL NEAR DEATH 09 C1 00 00 = 27% PHYSICAL NEAR DEATH 0A C1 00 00 = 28% PHYSICAL NEAR DEATH 86 21 01 00 = +2.8 SLOW POISON 9B D5 01 00 = 11.7% BLUNT 9C D5 01 00 = 12.2% BLUNT 2B D7 01 00 = 32.6% BLUNT 2C D7 01 00 = 33.8% BLUNT AD DA 01 00 = 26.7% THRUST AE DA 01 00 = 27.7% THRUST AF DA 01 00 = 28.7% THRUST B0 DA 01 00 = 29.7% THRUST 13 DB 01 00 = 32.6% THRUST 14 DB 01 00 = 33.8% THRUST 95 DE 01 00 = 26.7% BLOOD 97 DE 01 00 = 28.7% BLOOD 98 DE 01 00 = 29.7% BLOOD FA DE 01 00 = 31.5% BLOOD FB DE 01 00 = 32.6% BLOOD FC DE 01 00 = 33.8% BLOOD 7E E2 01 00 = 23.1% ARC 7F E2 01 00 = 23.9% ARC 80 E2 01 00 = 24.8% ARC E3 E2 01 00 = 27.2% ARC E4 E2 01 00 = 28.1% ARC 65 E6 01 00 = 22.3% FIRE CB E6 01 00 = 27.2% FIRE CC E6 01 00 = 28.1% FIRE 20 E9 01 00 = 8.8% BOLT E9 E9 01 00 = 20.3% BOLT EA E9 01 00 = 21% BOLT EC E9 01 00 = 22.5% BOLT 4F EA 01 00 = 23.9% BOLT B3 EA 01 00 = 27.2% BOLT B4 EA 01 00 = 28.2% BOLT 0B ED 01 00 = 9.8% PHYSICAL 0C ED 01 00 = 10.1% PHYSICAL D1 ED 01 00 = 20.3% PHYSICAL 20 F2 01 00 = 21.5% ATK 83 F2 01 00 = 23.6% ATK 84 F2 01 00 = 24.4% ATK F0 F9 01 00 = +65 STR SCALING D2 FD 01 00 = +19.8 SKILL SCALING D6 FD 01 00 = +23.1 SKILL SCALING D7 FD 01 00 = +23.9 SKILL SCALING D8 FD 01 00 = + 24.8 SKILL SCALING F2 00 02 00 = +12.6 BLOOD SCALING 21 02 02 00 = +25.3 BLOOD SCALING 22 02 02 00 = +26.3 BLOOD SCALING 23 02 02 00 = +27.2 BLOOD SCALING 24 02 02 00 = +28.1 BLOOD SCALING 44 05 02 00 = +65 ARC SCALING 09 06 02 00 = +25.3 ARC SCALING B9 23 02 00 = 3% REDUCE STAM COST 48 25 02 00 = 8.1% REDUCE STAM COST 4C 25 02 00 = 9.4% REDUCE STAM COST 52 2C 02 00 = 28% CHARGE ATK 53 2C 02 00 = 29% CHARGE ATK 54 2C 02 00 = 30% CHARGE ATK FF 30 02 00 = +5 HP RECOVER 01 31 02 00 = +5 HP RECOVER 02 31 02 00 = +5 HP RECOVER 03 31 02 00 = +5 HP RECOVER 04 31 02 00 = +6 HP RECOVER 8B 44 02 00 = 34.4% PHYSICAL AT FULL HP 8C 44 02 00 = 35.6% PHYSICAL AT FULL HP AA 47 02 00 = 28% PHYSICAL NEAR DEATH AB 47 02 00 = 29% PHYSICAL NEAR DEATH AC 47 02 00 = 30% PHYSICAL NEAR DEATH 42 50 02 00 = 28% NOURISHING AT FULL HP 43 50 02 00 = 29% NOURISHING AT FULL HP 44 50 02 00 = 30% NOURISHING AT FULL HP F3 86 02 00 = 27.2% PHYSICAL F4 86 02 00 = 28.1% PHYSICAL 77 8A 02 00 = 23.9% PHYSICAL 78 8A 02 00 = 24.8% PHYSICAL A8 92 02 00 = +24.4 STR SCALING AC 92 02 00 = +28.1 STR SCALING B1 99 02 00 = 24.3% ATK BEAST B3 99 02 00 = 26.1% ATK BEAST B4 99 02 00 = 27% ATK BEAST 7B 9A 02 00 = 32.6% ATK BEAST 7C 9A 02 00 = 33.8% ATK BEAST C3 11 02 00 = 32.6% ATK KIN C4 11 02 00 = 33.8% ATK KIN 7B 1D 02 00 = +21.7 RAPID POISON 7C 1D 02 00 = +22.5 RAPID POISON 1B AA 02 00 = +18.1 SLOW POISON 1C AA 02 00 = +18.7 SLOW POISON 3A AD 02 00 = +16.8 RAPID POISON 3C AD 02 00 = +18 RAPID POISON =============================================================================== Data from Ninjitsu Hombre (JD) 5A BC 00 00 = 12% nourishing at full hp 5C 3F 00 00 = +33.8 BOLT 67 E6 01 00 = 23.9% FIRE 68 E6 01 00 = 24.8% FIRE 70 3B 00 00 = 29.3 FIRE ATK 10 3B 00 00 = +15 FIRE 1A 1A 01 00 = 11.3% ATK KIN 1C 1A 01 00 = 12.2% ATK KIN 12 DB 01 00 = 31.5% THRUST A9 85 00 00 = ATK BEAST DOWN 10.9% 9A EE 01 00 = 26.3% phys 02 E6 01 00 = 21% FIRE 71 B8 00 00 = WPN DURA DOWN -60.8 72 B8 00 00 = WPN DURA DOWN -63 73 B8 00 00 = WPN DURA DOWN -65.3 74 B8 00 00 = WPN DURA DOWN -67.5 4A 12 01 00 = 11.3% ATK BEAST 4B 12 01 00 = 11.7% ATK BEAST 4C 12 01 00 = 12.2% ATK BEAST 2E 89 00 00 = 5% ATK KIN 2F 89 00 00 = 5.2% ATK KIN 30 89 00 00 = 5.4% ATK KIN B0 C7 00 00 = 4.8% nourishing at full HP E7 11 01 00 = 5.2% ATK BEAST E8 11 01 00 = 5.4% ATK BEAST