Building Your First Roblox Game in 2026 – Complete Guide

Take a Roblox place that already runs in Studio, publish it to a small audience, test it the way a real player would, and write down every failure.

This is the publish-and-test pass, not the build tutorial. If you still need a first working game, build that first and come back. Everything here assumes your place already starts, spawns a player, and does its one job when you press Play.

The goal is narrow. You want to learn what changes when your game leaves your own Studio window. Scripts that “worked” can behave differently when a real server and a real client are involved, or when a second person joins.

Step 1: Save twice before you publish

Before you touch any publish setting, make a local copy. In Studio, use the File menu to save the place to a file on your computer. Name it with today’s date, such as coin-game-2026-10-03.rbxl.

That file is your undo button. If a publish goes wrong or you break something while testing, you can open the local copy and start again.

Next, save to Roblox from the same File menu. The exact wording and the difference between saving and publishing have shifted between Studio versions, so read the current Creator Hub page on publishing before you rely on either one. The safe habit is simple: keep a dated local file, then push to the cloud.

Step 2: Publish without going public

Roblox’s current documentation says new games are set to private by default. A private game is only available to you and to users with Edit permissions. That is the right starting point.

To publish:

1. Use File > Publish to Roblox.
2. Fill in a name and a short, honest description.
3. Pick yourself as the creator, unless you already work in a group.
4. Confirm.

Do not open the game to the public yet. You are publishing so a real server can run it, not so strangers can find it.

Step 3: Pick how your second player gets in

You need a second player. You have three options. Pick the one that fits your setup.

Option A: Studio’s multi-client test. The current Studio testing docs describe a Server & Clients mode in the test dropdown. You choose how many clients to launch, press Play, and Studio opens one server session plus one window per client. The docs say one or two clients is usually enough. This needs no second account and no publish, so start here.

Option B: A second account with access. A private game only lets in users with Edit permissions. If you want a second account to join the published game, you can add it as a collaborator with the right permission in the game’s settings. Check the current docs on managing collaborators for the exact steps. Only give access to accounts you control or trust.

Option C: Friends only. In the Creator Dashboard, the docs describe Configure > Settings > Audience, where you can pick Limited and then Friends. That option only appears for games owned by your personal account. Roblox lists publishing requirements for any Limited audience, such as a questionnaire and an age check. Complete whatever the dashboard asks for at the time.

If you work with a collaborator in Studio, the docs also describe Team Test, where collaborators join one shared test session. Only one team test session can run at a time.

Step 4: Run the multi-client test first

Start with Option A, since it is fast and free of account setup.

1. Choose Server & Clients in the test dropdown.
2. Set two clients.
3. Press Play.

You will see several windows. One is the server. The others are players. Arrange them so you can see at least one client and the server.

Now click through this script of actions in order. Do each one in Client 1, then repeat it in Client 2.

• Spawn and look around. Does each player see the other?
• Do the main action of your game, such as picking up a coin.
• Check that the other client sees the result. If a coin vanishes for Client 1, does it also vanish for Client 2?
• Check any score or leaderboard in both windows.
• Leave from one client, then check that the other client and the server keep running.

Watch the Output window while you test. The docs say messages are color-coded by origin, so you can tell whether an error came from the server or a client. Note which side each error comes from. That tells you where the bug lives.

Step 5: Run a real join test

Once the local test passes, try the published version with a second account or a friend.

Join from the Roblox app, not from Studio. Have your second player join a few seconds later. Then repeat the same click-through from Step 4.

A real join tests things Studio can hide. Load time is longer. Network delay is real. A player can join after something has already happened in the world. If your game sets up an object only when the first player joins, the second player may see a broken version.

Step 6: Keep a short “what broke” checklist

Do not trust your memory. Open a plain text file next to your project and write one line per problem. Use this checklist as a starting point:

• Second player sees a different world. Something was changed in a LocalScript that should run on the server.
• Score only updates for one player. The value lives on the client, or the server code reads the wrong player.
• Pickup counts twice. Two body parts touched at once, or two players touched at once, and no flag stopped the second hit.
• Late joiner is missing objects. Setup code ran once and did not account for players who arrive later.
• Errors only on the server. A script expects an object that does not exist yet. Look for missing waits.
• Errors only on the client. A LocalScript is in a spot where it does not run, or it references something the client cannot see.
• Player leaves and the game breaks. Code still points at a player who is gone.

For each item, write three things: what you did, what you expected, and what happened. One line each is enough.

Step 7: Fix, republish, retest

Fix one problem at a time. After each fix, run the Server & Clients test again before you republish.

When the local test is clean, publish again and repeat the real join test. Keep the audience limited the whole time.

Only when your checklist stays empty for a full round should you think about a wider audience. Even then, read the current publishing requirements on the Creator Hub first. They change, and the dashboard will tell you what applies to your account.

What you have now

You have a dated local backup, a private or friends-only published game, a repeatable two-player test, and a written list of what broke. That list is the most useful file in your project. Keep it, and add to it every time you publish.