An RBXL file contains a location that defines a place in ROBLOX, an online multiplayer building game. It stores information that describes a playing field, which consists of 3D models (.RBXM files), parts, tools, scripts, and teams. RBXL files define the playing area, or 3D world, within ROBLOX.

RBXL file open in ROBLOX Studio In ROBLOX Studio, you can choose from a variety of models, meshes, decals, and audio to apply to vehicles, weapons, buildings, and NPCs that can be played in the ROBLOX game. All of this information is stored in the RBXL file. You can open RBXL files in ROBLOX Studio by selecting FILE → Open.... You can create an RBXL file in ROBLOX Studio by selecting FILE → New. After you make edits to the file, you can save it by selecting FILE → Save or Save As....