Sword slash VFX for Roblox

A slash effect sells the swing more than the sword animation does. Combat games usually layer two things: a trail on the blade that follows its real path, and a slash flash in front of the attacker at the moment the hit lands. Flipbooks are the second part: a crisp arc that appears, cuts and fades in under a second.

Slashes that read well

Katana ComboBlazing ComboReaper's HarvestShadow FlurryTwin Fang XEnergy BladeFrost EdgeWhirlwind

• Fast single swings: Katana Combo and Blazing Combo, about 1 second or less.
• Crosses and multi-hits: Shadow Flurry and Twin Fang X for a finisher or a dual-wield move.
• Heavy weapons: Reaper's Harvest for scythes and greatswords, with a wider, slower arc.
• Spin attacks: Whirlwind is a ring of slashes, made to sit centred on the character.

Place a slash in front of the attacker

Put the slash a few studs in front of the character's HumanoidRootPart. CFrame.new(0, 0, -3) is three studs forward, because a part's front faces its -Z axis. Rotate the particle for each hit of a combo so the swings do not all look the same: the emitter's Rotation is in degrees, clockwise, and applies to particles emitted after you set it.

local Debris = game:GetService("Debris")
local template = game.ReplicatedStorage.Effects:WaitForChild("Katana Combo")

local function slash(root: BasePart, angle: number)
	local fx = template:Clone()
	fx:PivotTo(root.CFrame * CFrame.new(0, 0, -3))
	fx.Attachment.Flipbook.Rotation = NumberRange.new(angle)
	fx.Parent = workspace
	Debris:AddItem(fx, 2)
end

-- A three-hit combo: a new angle for each swing
local root = game.Players.LocalPlayer.Character:WaitForChild("HumanoidRootPart")
slash(root, 0)
task.wait(0.25)
slash(root, 160)
task.wait(0.25)
slash(root, -35)

This plays on the client that runs it. For other players to see it, run the same function from a RemoteEvent on every client, as shown on anime VFX. The ready model's PlayOnce script starts the slash when the clone lands in the workspace; with the free PNG, call Emit(1) on the clone's emitter after parenting it.

What a flipbook slash can and cannot do

• It faces the camera. The slash is a flat picture turned toward the viewer, so it reads the same from every side. It shows the cut, not the blade's path through 3D space. For that, add a Trail to the sword between two attachments on the blade.
• It stays where you put it. The model's part is anchored, so a slash stays in place if the attacker keeps running. For a slash that travels with a dash, weld the part to the HumanoidRootPart instead (see aura VFX); LockedToPart is on, so the particle moves with the part.
• Speed: a slash plays at its true speed because Lifetime equals the effect's length. To make a heavy swing feel slower without exporting again, lower the emitter's TimeScale (1 is normal speed, 0.5 is half).

Settings for slashes

• Size: 6 to 10 studs for one-handed weapons, 12 and up for greatswords and spin attacks.
• Glow: bright slashes (Katana Combo, Energy Blade) use LightEmission 1. Ink and cartoon slashes with dark outlines need LightEmission 0, or the dark lines disappear.
• Grid: effects up to 0.75 s get a 4x4 grid (256 px frames at 1024), which keeps thin arcs sharp. For a longer slash you can still pick 4x4 in the studio export for sharper frames at a lower frame rate.

The flipbook PNG is free: the ROBLOX button on every effect page needs no account, and a free account can also export it from the studio (3 effects a day) with the grid and texture size of your choice. The ready model, a .rbxmx with the emitter set up and a script that plays it, plus UIFlipbook.luau for UI, comes with any plan, from $7.99 a month.