.OPM File Extension
Object Playground Mod
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What is an OPM file?
An OPM file is a mod for the video game Object Playground. It contains data used to add objects to or otherwise modify the game's gameplay.
Object Playground is an online game in which players can manipulate various objects within a closed playground. If players want to add mods to Object Playground, they can do so by selecting the Want to play mods? option from the game's homepage.
From the following screen, players can select Load Mod to upload mod packages saved as OPM files. These files are plain text files that contain JSON-formatted text. The text defines the mod's included objects and other game data (which may be saved in a separate, referenced .SB3 file).
How to open an OPM file
You can open and edit an OPM file with Microsoft Visual Studio Code (multiplatform) or any other text or source code editor.
To use an OPM file with Object Playground, select the Want to play mods? option on the game's homepage, click Load Mod, and load your OPM file.