Calculating Base Diamond Roll Rates (using 280 rolls of Rising Sun gacha)

So I was rolling hard on the “Rising Sun” diamond gacha for Sun God Amaterasu and I decided to go back and tally up the rolls to get a general sense of what the default rates are (since apparently Ateam doesn’t publish them publicly and Darrick wouldn’t tell me them). Here are the results:

Background

  • Rolled 40 x 7-rolls (280 total) on the “Rising Sun” gacha, which featured hero “Sun God Amaterasu” and weapon “Yata no Kagami X (Sp.)” rate up
  • I stopped rolling after getting Amaterasu, so this data is biased in that it is NOT good sample data for determining what the RATE UP rates are but rather what the BASE rates are
  • The raw data in Excel format can be found here if you want to perform your own more in-depth data analysis

Data

#3* hero#2* hero#3* equip#2* equip#3* accs#2* accs
5Freya13Baldr3Seid Rod X (Sp.)9Kris1Brisingamen X (Sp.)4Elven Cufflet
4Ranco13Hodr3Stillwater Greatsword8Featherweight Rapier1Sniper’s Ring3Fang Necklace
4Mani11Mele2Lunar Cane7Dragonscry1Purity Ring3Sorcerous Ring
4Loki11Shiena2Raven Garb7Gladius1Kitty Collar X (Sp.)
3Vali8Idun2Prima Blaster X (Sp.)7Shade Edge
2Gullveig7Welver2Kuro-Ichimonji X (Sp.)7Saint’s Robe
2Thor6Luflit2Grimoire of Accusation6Rose Rapier
2Niji4Sonia1Crystal Armor6Mythril Hatchet
2Hel3Sakura1Deforester6Burning Staff
1Bear3Heimdall1Glacial Cloak5Earthen Hammer
1Lipka1Key to Asgard5Mythril Mail
1Luca1Dusk4Mossy Armor
1Liciela1Stun Knife4Icicle Bow
1Momiji1Lotus Flower4Knight’s Shield
1Liesa1Hati the Doll X (Sp.)4Forest Bow
1Michelle1Flowing Harp X (Sp.)4Berserker Helm
1Nautica1Twilight Circlet4Enchanted Shield
1Canon1Faemsir4Magic Broom
1Arte1Elysian Dress X (Sp.)4Fraxinus Staff
1Amaterasu1Yata no Kagami X (Sp.)3Rifleman’s Vest
3Grail Wand
3Curved Blade
2Druid’s Cloak
2Autumn Rain
1Swarthy Goggles

Analysis

Per category

%#Type
13.93%393-star Hero
28.21%792-star Hero
10.36%293-star Equipment
42.50%1192-star Equipment
1.43%43-star Accessory
3.57%102-star Accessory
100.00%280TOTAL

Per rarity

%#Type
25.71%723-stars
74.29%2082-stars
100.00%280TOTAL

Per type

%#Type
42.14%118Hero
52.86%148Equipment
5.00%14Accessory
100.00%280TOTAL

Conclusions

Obviously the data set is far too limited to make many specific conclusions, but the following general conclusions can be made

  • Rate ups are a lie Rate ups are not very noticeable in the small scale, i.e. if you roll 100 times, don’t expect to get something like 10 rate ups if you normally would only get 1 (instead, expect to at best get 2)
  • The 3-star vs 2-star rate is roughly 25% vs 75%
  • The hero vs gear rate is roughly 40% vs 60%
  • Accessories are very rare, but this is more a side effect of the accessory pool itself being small
  • Within each category, there MIGHT be different rates (e.g. Baldr seemed a lot more common than Heimdall) but I would likely just attribute to the more perceivable effect of RNG on small sample sizes

Predicted Rolls

Based on the above data, here would be your predicted rolls breakdown if you were to roll 100 times on a diamond gacha similar to the “Rising Sun” one. Keep in mind that this works off the assumption that all special diamond gachas share the same base rates (which I think is a reasonable assumption). I do not have any data for special gachas such as gear or costume gachas, nor whether or not Star Party/Moon Party/etc. gachas use the same base rates.

#Type
103-star Hero
153-star Gear
302-star Hero
452-star Gear

Hope this data was helpful and good luck with your rolls!

~Keripo

Originally posted on Reddit

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