Uncopylocked Roblox games and maps

A copylocked place can be played but not copied. An uncopylocked one can be opened in Roblox Studio and edited, scripts and all. A .rbxl file from Forja is the whole place, so you can open it and change everything in it.

Yes. You can build your Roblox game on it and publish it. You can't share, resell or reupload the file itself, and some creators add their own terms on the listing.

Files from random sites can hide a backdoor: a script that lets someone else control your game. Forja reads the scripts in the files it can open, and listings with no sign of one say Scripts checked. For a file from somewhere else, use Forja's free backdoor scanner.

The free ones are free to keep. The paid ones are bigger, finished maps and complete games. You pay once, and you can download the file again any time from your orders.

A .rbxl is a whole place: the map, its lighting and its scripts. A .rbxm is one model or a set of them, which you add to a place you already have.