All Weapons In Slime Seas (May 2026) Ranked By Tier

All weapons in Slime Seas fall under one of four stances — Katana, Scythe, Greatsword, or Berserker — and picking the right one literally decides how fast you melt slimes. I’ve grinded this game way more than I should admit, and this guide pulls together every single weapon, what it does, and which ones are actually worth your time.

Here’s what you’ll learn in this guide:

• Every weapon currently in Slime Seas, ranked by tier
• All 4 weapon stances and their full mastery skill trees
• Damage stats, rarities, and level requirements
• The best weapons for early, mid, and late game
• Pro tips, common mistakes, and stuff most guides skip

I’m writing this after dozens of hours of testing builds, dismantling gear I shouldn’t have, and rerolling races until my eyes blurred. So yeah — trust me, I learned most of this the hard way.

What Is Slime Seas?

Slime Seas (formerly known as Slay a Slime) is an open-world anime RPG on Roblox made by the Slime Slaying Online group. The whole loop is simple on paper but addictive in practice — sail between islands, slap down hordes of slimes, kill big boss slimes, loot crystals, and upgrade your weapon until you can chunk things in two hits.

The game blew up earlier this year and recently hit a few million visits, partly because the combat actually feels good for a Roblox title. There’s mastery progression, real gear scaling, races with passives, PvP zones on the open sea, and four very different weapon stances — which is what we’re really here for.

Personally, I started with Greatsword because big numbers go brrr, then switched to Katana for boss runs, and ended up rotating between all four. Each one feels genuinely different.

How Weapons Work In Slime Seas

Before I dump the full list, here’s the stuff that actually matters:

• Stance decides your moveset. Each weapon belongs to a stance (Katana, Scythe, Greatsword, or Berserker), and stances share their mastery and skills.
• Mastery levels up as you use a stance. New abilities unlock at Mastery 1, 3, and 5. You also unlock skins along the way.
• Rarity runs from Common → Uncommon → Rare → Fabled. Higher rarity matters most when upgrading at the Blacksmith — you need same-rarity Upgrade Crystals to enhance gear.
• Level requirement gates everything. Don’t waste gold on stuff you can’t equip yet.
• Enchants stack on top: Power Scrolls give a +50–150 damage bonus, Defense Scrolls give +200–600 HP. Scrolls drop from Mage Slimes.

One thing I wish I knew sooner — the first upgrade on any weapon is a guaranteed 100% success. Every successful upgrade after drops the chance by 5%, and every failed upgrade adds 5% back. So always take that free first upgrade before dismantling anything.

All Weapons In Slime Seas 2026 (Ranked By Tier)

Alright, here’s the whole list, sorted into tiers based on damage scaling, stance value, and how useful they actually are during real progression. This is a current Slime Seas weapon tier list as of 2026.

S Tier — The Best Weapons In Slime Seas

These are the picks I actually keep equipped. They scale well, hit hard for their level bracket, and most of them slot into the strongest stance combos.

• Crimson Slimesword — Common, Greatsword/Berserker, 100 base damage, Level 30. Highest base damage Common in the game right now and the de facto endgame Greatsword for free-to-play players. Pairs ridiculously well with Dragonborn race.
• Golden Greatsword — Fabled, Greatsword/Berserker, 98 damage, Level 24. The cleanest mid-game spike for Greatsword users. Worth burning crystals on.
• Desert Katana — Common, Katana, 70 damage, Level 23. The strongest Katana you can grab without messing with rare drops, and it slots straight into Lunarian builds.
• Worn Iron Scythe — Common, Scythe, 50 damage, Level 21. Honestly the only real Scythe option for a long stretch — but it carries hard once you unlock Void Surge.

A Tier — Strong Mid-Game Picks

Not endgame, but they’ll absolutely carry you into level 20+ if you commit and upgrade them.

• Bluesteel Greatsword — Fabled, 49 damage, Level 18. Best Fabled Greatsword in the mid-game window. Fabled crystals are rare, so don’t dismantle this one carelessly.
• Reinforced Greatsword — Rare, 40 damage, Level 17. Solid bridge weapon between Copper and Bluesteel.
• Copper Greatsword — Uncommon, 32 damage, Level 15. Best Uncommon Greatsword — good for that Level 15 slump.
• Slime Steel Katana — Uncommon, 63 damage, Level 22. Way better than its rarity suggests for Katana mains.
• Raged Greatsword — Rare, 79 damage, Level 23. High-damage Rare worth running until you grab Crimson Slimesword.

B Tier — Decent But Replaceable

These get the job done in their bracket, but you’ll outgrow them fast.

• Adventurer’s Greatsword — Rare, 24 damage, Level 11
• Refined Katana — Uncommon, 19 damage, Level 10
• Chipped Katana — Common, 15 damage, Level 9
• Lightsteel Greatsword — Fabled, 15 damage, Level 7. Yes it’s Fabled, but the damage is low for the rarity — only worth keeping if you’re hoarding Fabled crystals.

C Tier — Early Game Filler

Use them, then dismantle them. Don’t overinvest.

• Verdant Katana — Common, 14 damage, Level 7
• Worn Adventurer’s Greatsword — Common, 12 damage, Level 8
• Refined Greatsword — Rare, 12 damage, Level 6. Disappointing for a Rare.
• Iron Greatsword — Uncommon, 10 damage, Level 4
• Elderforest Greatsword — Common, 23 damage, Level 12

D Tier — Starter / Skip ASAP

• Wooden Katana — Common, 6 damage, Level 2
• Wooden Greatsword — Common, 5 damage, Level 1
• Worn Iron Greatsword — Common, 8 damage, Level 3
• Worn Steel Katana — Common, 25 damage, Level 24 (despite the level, the damage is way too low for that bracket)

All 4 Weapon Stances & Their Skills

This is where the game actually gets interesting. Each stance has its own moveset, and it’s the moves — not just the base damage — that decide which weapons feel good.

Katana Stance

The fast assassin playstyle. High mobility, ranged dash projectiles, and a brutal finisher.

• Basic Attack (Mastery 0) — Fast slash combo
• Flashblade Surge (Mastery 1) — Quick teleport-slash hybrid, great for closing distance
• Surge Wave (Mastery 3) — Ranged slash projectile
• Thousand Slices (Mastery 5) — The endgame Katana ult. Multi-hit barrage that absolutely shreds bosses

If you like dashing in, slicing things up, and dipping out before they hit you, Katana is your pick. It pairs hardest with Lunarian race.

Scythe Stance

The crowd-control monster. Great AoE, decent reach, and one of the coolest visual ults in the game.

• Basic Attack (Mastery 0)
• Death’s Grasp (Mastery 1) — A pull/grab move that yanks slimes toward you
• Spinning Strike (Mastery 3) — 360° AoE, perfect for mob clear
• Void Surge (Mastery 5) — Massive AoE finisher with a dark damage zone

Scythe shines on farming runs and group fights. Dragonborn race makes it broken thanks to the +20% Scythe damage perk.

Greatsword Stance

The classic heavy hitter. Slow but devastating, with the highest single-hit numbers in the game.

• Basic Attack (Mastery 0)
• Earth Breaker (Mastery 1) — Slam that knocks back mobs
• Sweeping Slam (Mastery 3) — Wide horizontal cleave
• Spiraling Slash (Mastery 5) — Spinning multi-hit that’s basically a personal blender

This is what I run for boss fights. Big damage, huge hitboxes, and the cleanest visual feedback in the game.

Berserker Stance

Greatswords share with Berserker, but the Berserker moveset is more aggressive and lunge-heavy.

• Basic Attack (Mastery 0)
• Impaling Thrust (Mastery 1) — Forward stab with serious range
• Leaping Slam (Mastery 3) — Jump-attack AoE
• Colossal Slam (Mastery 5) — Massive ground pound finisher

If Greatsword feels too slow but you still want big numbers, Berserker is the move. Pairs great with Oni race for the bonus damage.

My Top 5 Best Weapons In Slime Seas Right Now

If you only chase a handful, chase these:

1. Crimson Slimesword — Best free-to-play endgame weapon. 100 damage Common is unheard of.
2. Golden Greatsword — Best Fabled by a mile if you can stomach the level 24 grind.
3. Desert Katana — Highest non-rare Katana damage. Carries Katana mains through the mid-late transition.
4. Worn Iron Scythe — The only real Scythe option until devs add more, but it genuinely works.
5. Raged Greatsword — Underrated bridge weapon. Most people skip it for Fabled, but it punches above its weight.

Tips & Strategies For Using Weapons In Slime Seas

Stuff I figured out the hard way so you don’t have to:

• Always upgrade once for free. Every weapon’s first upgrade is 100% guaranteed. Even if you’re going to dismantle it tomorrow, slap that free +1 on it first.
• Match your race to your weapon stance. Dragonborn for Scythe/Greatsword, Lunarian for Katana, Oni for Berserker. Wrong race kills your damage scaling.
• Hoard crystals by rarity. Common crystals can’t upgrade Fabled gear. Don’t dismantle Rares hoping to fuel a Fabled grind — it doesn’t work that way.
• Keep one weapon per stance leveled. Mastery is per-stance, not per-weapon, so the second you upgrade the weapon, the mastery carries over.
• Brew Superior potions in batches before farming. The 2x Luck Superior potion lasts 30 mins — perfect for boss runs.
• Power Scrolls > Defense Scrolls for damage builds. Don’t waste enchant slots on HP if you’re already running a tank race.
• Use the Daily Spinner every single login. Free Upgrade Crystals are no joke when Fabled drops are this rare.

Conclusion

That’s the full rundown of all weapons in Slime Seas as of 2026. The TL;DR? Pick a stance you actually enjoy, race-match it, grind to Mastery 5, and chase Crimson Slimesword if you’re a Greatsword/Berserker player or Desert Katana if you’re a Katana main. Don’t sleep on dismantling, don’t dump crystals into the wrong rarity, and always — always — take that free first upgrade.

The game updates pretty regularly, so I’ll keep this Slime Seas weapons guide refreshed whenever a new patch drops. Let me know your favorite weapon in the comments — and if you’ve found a build that’s broken in a fun way, drop it below so I can test it.

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