Make a 3D Obby Without Roblox (2026 Build Guide)

People searching "make a 3D obby without Roblox" almost always want the same thing: they like obbies, they want to build one, and they do not want it trapped inside Roblox. The good news is that an obby is one of the most portable game ideas there is. Nothing about an obstacle course is owned by Roblox, so you can rebuild the whole thing in an engine you control.

This is a build-it-with-AI guide covering the mechanics that make an obby an obby, the order to build them, the exact prompts, and the things the AI tends to get wrong so you can fix them fast. We build in Summer Engine, the AI game engine compatible with Godot 4, so the output is a real project file you open, edit, and export, not an experience locked to one platform.

Why Build an Obby Outside Roblox

Roblox Studio is genuinely good at obbies. The reason to build one outside it is not that the tools are bad. It is what happens to the finished game.

• You own it. A Roblox obby is hosted on Roblox and cannot be downloaded, ported, or moved. An obby built in Summer Engine is a Godot project on your disk. If the platform changes its rules tomorrow, your game does not care.
• You keep what you sell. Roblox pays out a fraction of what players spend, after its cut and the Robux exchange. A game you sell yourself has no per-game platform tax on top of the normal store fee.
• You ship anywhere. The same project exports to the web, Windows, Mac, and mobile, with no moderation queue. A Roblox obby runs in exactly one place.

The trade-off is honest: Roblox hands you a built-in audience on day one, and a standalone obby does not. So the question is whether discovery-on-a-platform or ownership-and-portability matters more to you. If you searched "make a 3D obby without Roblox," you have probably answered that already.

What an Obby Actually Is

Strip away the Roblox branding and an obby is a short list of well-understood parts: a character with gravity and a forgiving jump, a course of platforms with gaps, hazards (kill bricks) that send you back to your last checkpoint, checkpoints whose placement decides whether the game is fun or rage-inducing, moving and disappearing platforms for the mid-game, a finish line, and an optional timer and leaderboard that turn a one-time course into a speedrun loop. None of these are hard graphics or heavy simulation, which is exactly why an AI engine builds a convincing obby quickly. We build them in that order, playing after each step.

Start From the Platformer Template

Do not start from an empty scene. Begin from a template that already has a working character controller, gravity, and a camera, so the AI edits live systems instead of inventing them from scratch. For an obby, the Platformer template is the right base: it gives you a player you can move and jump on day one, which is most of the boilerplate an obby needs.

From there, your first prompt should describe the look and the first stretch of course in one shot:

Using the platformer template, set this up as a 3D obby. Keep the third-person camera. The player is a simple blocky low-poly character with a fast, forgiving jump. Build a starting platform, then a line of five floating platforms with gaps I have to jump across, over a lava floor far below. If I touch the lava, send me back to the start. Use bright, flat, saturated colors.

The style words (blocky low-poly, bright, flat, saturated colors) do real work. Leave them out and you get a generic gray default that does not read as an obby. The lava-as-kill-floor in the first prompt gets the core risk into the game immediately, before you add anything fancy.

Step 1: Get the Jump Feel Right First

The moment the AI finishes, hit play. Do not read the summary and assume it works. An obby lives or dies on how the jump feels, and only your hands can judge that. Jump across the first few gaps and check three things:

1. Is the jump forgiving? You should be able to clear a gap that looks clearable. If you are dying to jumps that look fine, say: "Make the jump a little higher and let me move faster in the air so gaps feel fair."
2. Is the camera helping or fighting you? A third-person obby camera sits behind and slightly above the player and does not clip into platforms. If it swings wildly, say so.
3. Is the respawn instant? After you hit lava you should be moving again in well under a second. Any longer and every death feels like a punishment.

Lock the jump feel before you build more course. Every later gap is tuned against this jump, so changing it afterward means re-tuning the whole level.

Step 2: Add Real Checkpoints

A single respawn point at the start is fine for the first stretch and miserable for a full course. The fix is checkpoints, and how you place them is the difference between a fun obby and a frustrating one.

Ask for them directly:

Add checkpoints. Put an invisible trigger zone over each safe platform that saves it as my respawn point when I land on it. When I touch lava or a hazard, respawn me at the last checkpoint I reached, not the start. Make checkpoints I have already activated glow so I can see my progress.

Under the hood the AI builds an Area3D over each pad that updates a stored respawn position, plus a hazard script that moves the player back on contact. You do not write that, but knowing it exists helps, because placement is a design decision you will tune. The rule of thumb: a checkpoint right before each hard section, so a death costs one tricky jump, never a whole sequence you already cleared.

This is where owning the project pays off. When the gap between checkpoint three and four is too punishing, you open the scene and drag a new checkpoint in, or ask the AI to add one. You are not stuck with a layout some closed tool generated.

Step 3: Escalate With Moving Platforms

Static jumps get old. The mid-game of every good obby introduces timing. Add it one obstacle at a time so you can tune each in isolation.

After the fifth checkpoint, add a section with three platforms that slide back and forth across the lava on a timer, so I have to time my jumps to land on them. Then add two platforms that disappear two seconds after I step on them and reappear after a moment.

Build, then play that section repeatedly. Moving-platform timing is the most common place an obby becomes unfair: a platform that moves too fast or a disappear timer that is too short turns a skill jump into a coin flip. Tune speeds and delays until the section is hard but readable. If you cannot tell when a platform is about to vanish, ask the AI to make it flash first. Readable hazards are fair hazards.

The Obstacle Vocabulary

Most obbies are built from a small set of obstacle types, remixed and combined. Knowing the names makes your prompts precise, because "add some obstacles" gives the AI nothing to work with. Ask for these by name:

• Kill brick: a surface that resets you on touch. The base hazard, like a sweeping red beam.
• Conveyor: a platform that pushes you while you stand on it. Great to fight against by pushing you backward.
• Disappearing platform: vanishes shortly after you step on it, forcing you to keep momentum.
• Rotating or swinging hazard: a spinning beam or pendulum you time your run around.
• Tight ledge: a narrowing path that tests precision over timing.
• Climb section: a vertical stretch that breaks up the horizontal jumping.

Build a course by stacking these so each section introduces one new idea, then a later section combines two: a disappearing-platform stretch, then a moving-platform stretch, then a stretch that is both at once. That escalation is the entire art of obby design, and you tune it by playing, not by reading.

Step 4: Add the Finish, the Timer, and the Leaderboard

Now close the loop. A course with no ending is a sandbox, not a game.

Add a finish platform at the end with a glowing goal pad. When I reach it, show a "You finished!" screen with my completion time. Start a timer when I leave the first platform and stop it when I touch the goal. Save my best time and show it on the start platform.

That gives you the speedrun hook: every run has a score, and a visible best time begs to be beaten. Save the best time to disk first so the loop works offline. Once the course is genuinely fun and you have play-tested the full run, ask the AI to add an online leaderboard. Godot has built-in networking and a save system, but treat the online step as a second phase. A great single-player obby with a local timer beats a buggy one with a leaderboard nobody is racing on yet.

Step 5: Make It Yours, Then Ship It

The last 20 percent separates your obby from a template. Swap the placeholder blocks for your own low-poly platforms, give the course a theme (a lava cave, a sky island, a candy world), add a sound on each checkpoint, and write a one-line intro. Generate low-poly props in the editor or import your own once the gameplay is locked.

Then export. This is the point of building outside Roblox: the same project goes to the web (HTML5), so you share a link the low-friction way people open obbies inside Roblox; to Windows and Mac as a standalone or Steam build; and to mobile, where short obby sessions fit perfectly. No platform takes a cut of what you sell, nothing waits in a moderation queue, and the project file is yours on any plan.

Honest Expectations

A playable single-player obby (a character, a course with checkpoints, a few moving platforms, a timer, and a finish line) is realistic in an afternoon with the AI doing the boilerplate. A polished obby with custom art, themed stages, online leaderboards, and multiplayer is a multi-week project. Build the single-player course first, because it is the part you can make great fastest and it tells you whether the idea is worth expanding.

The AI is not magic. It will occasionally place a checkpoint badly or mis-time a platform. That is expected, and the whole workflow is the prompt-play-fix loop: describe a change, run the game, judge it with your hands, correct it. Because the output is a real Godot project and not a closed experience, every fix is available to you, whether you ask the AI or open the script and change one number yourself.

For a broader genre breakdown of obbies, simulators, and tycoons, see the companion guide on how to make a game like Roblox, and to dial in the chunky avatars and snappy feel, see how to make a Roblox-style game with AI. When you are ready, start in Summer Engine from the Platformer template and describe your first stretch of course.