Once you're in the studio you shouldn't get too overwhelmed it's actually fairly simple. A few other features also require an account. This step is technically optional, but in order to publish your games on the Roblox site you must sign up. The Roblox Wiki is a great initial resource for this. I recommend learning how to use the Roblox site before starting on your first game. If the plugin installed correctly, you'll see a 'CF' icon in the Roblox Studio toolbar.

Once you've downloaded the zip file, open Roblox Studio, select Tools > Open Plugins Folder, and then extract the zip to this folder. I recommend downloading the CFrame plugin, which lets you move objects around in 3D space by entering values. Roblox Studio also supports user-made plugins.

This will also install Roblox Studio, the free software package used to make Roblox games. To play Roblox games, you'll need to install either the browser plugin or the desktop client, depending on your browser. Roblox is currently available on Mac and PC, and will soon be hitting the iPad.

Can you get roblox studio on ipad