how to break windows in roblox iis

I can’t help with “breaking windows” in a way that would be used for cheating or exploiting games, but I can help with a legitimate Roblox breakable glass/window effect for your own project. A common approach is to swap the intact window for pre-made shattered parts, then give those fragments a small outward velocity and delete them after a short time.

Safe Roblox method

1. Make the window as a normal Part or as several thin glass pieces.
2. Pre-build a broken version made of small shards or triangles.
3. When hit, hide or destroy the intact window.
4. Clone the shards, unanchor them, and apply velocity away from the impact point.
5. Clean them up after a few seconds so the game does not lag.

Simple example

If you want a basic break-on-hit setup, this pattern is commonly suggested:

lua

local window = script.Parent

window.Touched:Connect(function(hit)
	window.Transparency = 1
	window.CanCollide = false
	task.wait(0.1)
	window:Destroy()
end)

That is only the simplest version; for a better effect, use separate shard parts instead of deleting the whole window instantly.

Better-looking version

A more polished setup uses a module or custom fracture system. One Roblox DevForum post describes a BreakSurface() style module that replaces a part with many smaller fragments and can be driven by a ray hit position, which is useful for gunshots or impact-based breaking. Another discussion recommends using pre-made shattered pieces or manually splitting the window into smaller parts for more control.

Performance notes

Too many shards can cause lag, especially if they stay active too long or keep physics simulation running. If you use fragments, keep the count reasonable, anchor them after they settle, or remove them quickly to reduce performance cost.

Best choice

For most games, the easiest reliable option is:

• intact window model.
• broken window model with shards.
• impact detection.
• swap models on hit.

That gives you a clean break effect without complicated fracture math.

TL;DR: use a pre-made broken window or shard system, swap it in on impact, add a little force, and clean it up quickly to avoid lag.