Authorized Game Add-ons
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Sell with us →About authorized game add-ons
Add-ons extend games players already own: new adventures and supplements for tabletop role-playing systems, scenario and expansion packs for board games, custom campaigns and mods for video games that allow them. In this category, every add-on must be made within the original game's published license, open content terms or fan-content policy.
That means sellers create original content that works with a game rather than copying its artwork, text or trademarks, and they don't imply the add-on is official. Many tabletop systems publish open or community licenses that explicitly allow third-party supplements; many video games publish modding policies that set what may and may not be sold.
As a player, check which game and edition or version the add-on supports, how it installs or is used, and that the listing names the license or policy it follows. Add-ons are independent creations and aren't endorsed by the original publisher unless stated.
Buying authorized game add-ons
- Check the base game, edition or version the add-on supports.
- Look for the license or fan-content policy the creator follows.
- Read installation steps for mods and any other add-ons they depend on.
- Preview sample pages of adventures and supplements.
- Remember add-ons are independent, not official publisher content.
Questions about authorized game add-ons
What makes an add-on authorized?
It's created within the original game's published rules for third-party or fan content, such as an open game license or a modding policy, and doesn't copy protected material.
Will a mod break my game?
Back up your saves and follow the creator's install instructions. Check version compatibility, since game updates can affect mods.
Do I need the original game?
Yes. Add-ons extend a game you already own; they don't include it.