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Splatoon Raiders Weapon Farming

What decides which weapon drops, and the one method anyone has actually measured.

By the SplatAtlas editorial team · Last updated: 2026-08-19

Splatoon Raiders weapon render

What Actually Decides Which Weapon You Get?

Every guide tells you where weapons drop. Crates, crystals, large Salmonids, the chest at the end of a dungeon. That answers the wrong question. Once you are past the credits you are not short of weapons, you are short of one specific weapon, and the drops keep arriving as everything except that one.

There are two layers to the answer and they are not equally solid, so this page keeps them apart. The first layer is arithmetic on our own weapon database and it is not in dispute. The second layer is a method that one Japanese player has measured over 200 recorded laps, that the community argues about, and that no wiki has published in any language. We give you the first as fact and the second with its sample sizes, its dissenters, and our reading of why the dissent looks the way it does.

Why a Splatana Is Three Times Easier to Target Than a Shooter

Splatoon Raiders has 60 base weapons across 11 types, and the types are not the same size. Shooter has nine. Seven types have six each. Brush, Stringer and Splatana have three each. If drops are rolled evenly across individual weapons, which is what the reports below indicate, then a type’s natural share of your drops is simply its share of the roster. That single fact explains most of what players experience as luck.

Weapon typeWeapons in typeNatural share of dropsShare when equippedWhat the method is worth
Shooter9 of 6015%about 15%Nothing. It is already there.
Roller, Charger, Slosher, Splatling, Dualies, Brella, Blaster6 of 60 each10%about 15%About 1.5x. Real, but too small to feel.
Brush, Stringer, Splatana3 of 60 each5%about 15%About 3x. This is the whole prize.

The weapon counts are ours, taken from the 120-weapon database on our weapons page, and you can check them yourself. The 15% figure is the community-tested part and is approximate. Notice that the Japanese tester who published a Primo Rail Wiper run headlined it as more than three times the theoretical rate: the Rail Wiper is a Splatana, and 5% to 15% is exactly three times. His number and our roster arithmetic were produced independently and land on the same value.

The Method: Carry the Type You Are Hunting

Stated plainly, so you can stop reading here if that is all you wanted:

  1. 1Equip a weapon of the type you are trying to farm before you start the lap. Any weapon of that type. A junk three-star of the right type beats your best weapon of the wrong one.
  2. 2Pick a type with three weapons if you have a choice. Brush, Stringer and Splatana are the types where this is worth doing at all.
  3. 3Run laps somewhere that gives you many rolls per hour rather than the highest rarity per roll, unless you specifically need a five-star.
  4. 4Keep the weapon equipped for the whole lap. Nobody has tested whether swapping mid-run does anything, so do not assume it is free.
  5. 5Check your storage. Weapon storage is reported to cap at 300, and a full storage is the one way to make all of this do nothing.

The honest version of step 1: what was tested is the weapon TYPE, not the individual weapon. One player reports getting the exact five-star Primo he wanted while carrying a three-star of that same weapon, which would be a stronger claim if true, but a single success is not evidence of a narrower mechanic. Target the type. Anything beyond that is hope.

What Was Actually Measured

All of this traces to one Japanese channel that publishes lap counts and totals rather than impressions. We have not watched the runs, so we can give you the sample sizes and what the community read out of them, and we mark clearly which numbers we read ourselves.

TestScaleDateReported finding
First drop-rate run, Bottomless Buffet floors 4 to 6100 laps, 571 weapons recorded2026-08-11Establishes a baseline appearance rate per weapon type, then tests whether the equipped type raises its own rate. The chapter list includes a section on the baseline rate per type.
Follow-up with a Shooter as the control+100 laps, 200 laps total2026-08-13Runs the same test carrying a Shooter. Shooter is the one type already sitting at the 15% mark, which makes it the right control to pick. Closing chapters are titled as the mechanism and the per-type drop rate.
Primo Rail Wiper, four locations compared4 locations2026-08-16Description states a way to push the Wiper appearance rate to more than three times the theoretical value. Rail Wiper is a Splatana, and three times is what our roster arithmetic predicts for a three-weapon type.

The Argument About It, and Why the Argument Fits

Plenty of players say it does not work, and they say it flatly. One runs Shooter constantly and sees Chargers, Blasters and Brellas instead. One has been playing Splatling and remembers no Splatling bias at all, and suggests you simply notice your own weapon type more. One farms Blaster in Awlmun Den on Super Spicy and sees Brellas and Rollers. We are printing these because they are real and because a page that only quoted the believers would be worth less to you.

Here is what we noticed, and it is the reason this page exists. Every one of those dissenters is running a large type. Shooter is at 15% already, so the model predicts that player sees nothing, and he is the angriest one. Splatling and Blaster are 10% to 15%, a 1.5x shift that no human eye detects across a few hundred drops. The success reports come from Stringer, a three-weapon type at 5%. The disagreement sorts cleanly by roster size, which is what you would expect from a real effect that most players are simply too big a type to notice. It is not proof. It is the reason we did not dismiss the whole thing.

Where to Run Laps

The published farming spots disagree, but they disagree because they are answering different questions. Rolls per hour and rarity per roll are separate goals and you should pick one.

LocationWhat it is forTrade-off
Bottomless Buffet, floors 4 to 6Maximum rolls per hour. This is where the 200 laps above were run.Low floors roll low rarity. Use this to hunt a type, not a five-star.
Bottomless Buffet, floors 97 to 99The Japanese Salmon Run wiki’s pick for Primo weapons specifically.Far slower per lap. Better rarity per roll.
Awlmun Den, Super SpicyThe shortest lap among the Level 80 dungeons, so it is the usual five-star farm after the credits.Shards and materials come with it, which is why most players end up here by default.
Giant Crystal dungeons, Super Spicy, Level 80Game8 Japan calls the Level 80 Super Spicy crystal dungeons the most efficient route to five-star weapons.Five-star weapons come only from Super Spicy content, so anything easier is the wrong room.

What Nobody Has Measured

This is the part the ranking pages leave out, and leaving it out is how a guess becomes a fact. Five things are open:

  • ·Nintendo has published no drop rates for anything in this game. Every percentage on this page is either our arithmetic on the roster or a community count, and both are labelled.
  • ·Whether rarity is rolled separately from type. If a four-star and a five-star are drawn from the same type table, the method helps both equally. Nobody has run the numbers split by star rating.
  • ·Whether you can target an individual weapon rather than its type. One player believes he did. That is one player.
  • ·Whether location changes the type distribution. A player who farms Baygull Beach reports Brella and Splatling Primos far above their share and wonders whether it is the location or something tied to the save file. Untested either way.
  • ·Whether the effect applies to Primo drops specifically or to all weapon drops. The published counts covered all weapons, so the Primo-only question has never been isolated.

Weapon Farming FAQ

Does the weapon you have equipped change what drops in Splatoon Raiders?

A Japanese player has tested it over 200 recorded laps and reports that it does: the type you carry appears to take about 15% of your drops regardless of how many weapons that type has. It is not official and it is not confirmed by any wiki. It is the only measured claim anyone has published on the question.

Which weapon types does this actually help?

Brush, Stringer and Splatana, which have three weapons each and a natural share of 5%. Going to roughly 15% is a threefold improvement. For the seven types with six weapons it is about 1.5x, and for Shooter, which has nine weapons and sits at 15% already, it is worth nothing.

Where is the best place to farm Primo weapons?

It depends which you need. For rolls per hour, low Bottomless Buffet floors. For Primo weapons specifically, the Japanese Salmon Run wiki recommends floors 97 to 99. For five-star weapons, Super Spicy content only, with Awlmun Den the usual pick because its lap is short.

Do Primo weapons drop only in the Bottomless Buffet?

No. They come from crates, crystals, large Salmonids and end-of-dungeon chests anywhere, and Game8 Japan points at the Level 80 Super Spicy crystal dungeons for five-stars. The Buffet is recommended because Primo and five-star drops both get more common as you descend, not because it is the only source.

Is there a published drop rate for Primo weapons?

No. Nintendo has published none, and every Japanese and English wiki we checked on 2026-08-19 says the same. Anyone quoting you an exact Primo drop percentage is guessing.

Related guides

Sources

Evidence on this page, kept separate on purpose. The weapon counts per type, and therefore every natural-share percentage, are arithmetic on our own verified 120-weapon database and can be checked against our weapons page. The equipped-weapon effect is community-tested by a single Japanese player, おちゃGames, across three published runs on 2026-08-11 (100 laps, 571 weapons), 2026-08-13 (200 laps total, with a Shooter control) and 2026-08-16 (Primo Rail Wiper, four locations). We did not watch those runs: we read their titles, descriptions, stated sample sizes, chapter lists and comment threads on 2026-08-19. The 15% figure is secondhand, from a Japanese blog summary published 2026-08-13 that puts the equipped type at roughly one sixth of drops, and from a viewer who states the model directly in the comments. The strongest independent support is a comment from a player who ran Shooter only and reports the three-weapon types dropping clearly least, the six-weapon types slightly below Shooter, and near-uniform rates within Shooter’s nine, which matches the roster arithmetic from the other direction. Dissenting reports are quoted in the body rather than omitted. Game8 Japan, Game8 English, GameWith and the Japanese Salmon Run wiki were all read on 2026-08-19 for this page and none of them mentions the effect. Farming locations and the Super Spicy requirement for five-star weapons come from those four. One Japanese blog ranking for these keywords was excluded because it names a weapon that does not exist in this game.