If you've been hanging out in Roblox Studio lately, you've probably wondered how to set up a basic roblox kill script to add some stakes to your obby or combat game. It's one of those fundamental building blocks that every creator ends up needing at some point. Whether you're building a classic "the floor is lava" level or a high-stakes obstacle course, knowing how to handle player health through scripts is a must-have skill.
The cool thing about Roblox is that it uses Luau, a version of Lua that's pretty easy to read once you get the hang of it. You don't need a computer science degree to make a part that resets a player's character. In fact, the most basic version of this script is only a few lines long. But, as with anything in game dev, the devil is in the details.
Why Do You Need a Kill Script Anyway?
Think about your favorite games. Usually, there's some kind of "fail state." In an obby, if you fall off the platform or touch the glowing red neon blocks, you're supposed to go back to the start. That's exactly what a roblox kill script does—it tells the game, "Hey, if a player touches this specific thing, set their health to zero."
It's not just about being mean to the players; it's about creating a challenge. Without that risk of failing, a game can feel a bit hollow. You can use these scripts for traps, boundary lines, or even as part of a weapon system.
The Basic Logic Behind the Script
Before we just throw code at the wall, it's worth understanding how Roblox actually sees a player. Every player in your game has a "Character" model, and inside that model, there's an object called a Humanoid. This Humanoid object is what handles health, walking speed, and jumping.
When we talk about a roblox kill script, we're usually writing a script that listens for a "Touched" event. When a part is touched, the script checks if whatever touched it belongs to a character with a Humanoid. If it finds one, it just sets the Humanoid.Health property to 0. Simple, right?
Writing Your First Kill Script
Let's get into the actual work. Open up Roblox Studio and place a Part into the workspace. It can be a block, a sphere, or whatever you want. To make it look like a classic "kill part," you might want to turn it bright red and maybe make it neon.
- Right-click your Part in the Explorer window.
- Hover over "Insert Object" and select Script.
- Delete the default
print("Hello world!")line.
Now, you can type in something like this:
```lua local killPart = script.Parent
local function onTouch(otherPart) local character = otherPart.Parent local humanoid = character:FindFirstChild("Humanoid")
if humanoid then humanoid.Health = 0 end end
killPart.Touched:Connect(onTouch) ```
This is the bread and butter of Roblox hazard design. Let's break down what's happening here. The first line just tells the script that killPart is the block the script is sitting inside. The onTouch function is a set of instructions that runs whenever the part is bumped into.
The otherPart variable is the specific piece of the player that hit the block—usually a foot or a leg. Since the foot is inside the Character model, we look at otherPart.Parent to find the whole person. Then, we look for the Humanoid. If the script finds it, it's "game over" for that player.
Making It More Efficient
You might notice that in some scripts, people use a slightly different way to write this. If you want to keep things compact, you can write the whole roblox kill script in just a few lines by connecting the function directly to the event.
It looks something like this:
lua script.Parent.Touched:Connect(function(hit) local hum = hit.Parent:FindFirstChildOfClass("Humanoid") if hum then hum.Health = 0 end end)
Using FindFirstChildOfClass("Humanoid") is actually a bit of a "pro tip." Sometimes players might name things strangely, or there might be multiple objects inside a model, but there's usually only one Humanoid class. This makes your script a little more robust and less likely to break if you're doing weird stuff with your character models.
Common Mistakes to Avoid
Even a simple roblox kill script can go wrong sometimes. One of the most common issues is "flickering" or multiple triggers. Because the Touched event fires every single time a part moves against another part, it might try to kill the player twenty times in a single second.
Now, since the player is already dead after the first hit, it doesn't usually matter. But if you were adding effects—like a sound or a particle explosion—it would sound like a glitchy mess. To fix this, developers often use a "debounce." A debounce is basically a cooldown timer. It tells the script, "Okay, you've triggered once, now wait a second before you do it again."
Another thing to watch out for is the "parent of a parent" problem. Sometimes, if a player is wearing an accessory (like a hat) and the hat touches the kill part, hit.Parent might just be the Hat object, not the Character. Most modern Roblox scripts handle this by checking for the Humanoid specifically, but it's something to keep in mind if your scripts aren't firing when a player's head hits a trap.
Adding Some Flair to Your Kill Parts
Just making a player disappear is a bit boring. If you want your game to feel polished, you should add some visual or audio feedback. When the roblox kill script triggers, you could make the part change color, play a "crunch" sound, or emit some fire particles.
You can add these lines inside your if hum then block:
- Sound:
script.Parent.DeathSound:Play()(assuming you put a sound object inside the part). - Particles:
script.Parent.Explosion:Emit(10)(assuming you have a ParticleEmitter).
Small touches like this make the difference between a game that feels like a test project and one that feels like a real experience. Players love (and hate) clear feedback when they mess up.
Beyond Simple Parts: Kill Zones and Lava
Once you've mastered the basic part-based roblox kill script, you can start thinking bigger. What if you want an entire floor to be deadly? Or an invisible wall that kills players who try to glitch out of the map?
For lava, you don't necessarily want an instant kill. Maybe you want the player to take damage over time. In that case, instead of hum.Health = 0, you could use hum:TakeDamage(10). If you put this inside a loop or use a slightly different logic, you can create areas that slowly drain health, giving players a chance to escape if they're quick enough.
For "Kill Zones" (like the "Void" at the bottom of a map), you don't even always need a physical part. You can use a script that checks the player's Y-coordinate. If Position.Y drops below -50, for example, the script triggers the kill logic. This is great for performance because the game doesn't have to calculate physical collisions for a giant invisible floor.
Security and "Exploit" Scripts
It's worth mentioning that when people search for a roblox kill script, they're sometimes looking for "exploits" or "admin commands" to use in other people's games. If you're a developer, you don't really have to worry about your own kill scripts being used against you—server-side scripts (the ones you put in parts) are generally secure.
However, you should always be careful about where you get your scripts. Copying and pasting random code from untrusted sites can lead to "backdoors" in your game. These are hidden bits of code that allow someone else to take control of your server. Always stick to writing your own simple scripts or using well-known resources like the Roblox Developer Forum or the official Documentation.
Final Thoughts on Scripting Hazards
Creating a roblox kill script is often the very first bit of "real" coding a new developer does. It's satisfying because it has an immediate, visible effect on the game. You touch the block, and boom—the character falls apart.
Don't be afraid to experiment with it. Try making a script that kills the player but also teleports them to a "jail" area, or one that only kills them if they aren't holding a specific item. The logic is always pretty much the same: find the player, check a condition, and change their health.
Once you've got this down, you're well on your way to making more complex systems. Every massive RPG or battle royale on the platform started with simple logic like this. So, get into Studio, start messin' around with some parts, and see what kind of crazy traps you can come up with. Happy building!