引用自 Bigahh Dino：

XD+

引用自 NURNOCHGUCCI：

Can I just upload an image from Google, for example one that I like or think is cool? Or do I really have to create something myself so I don’t violate Steam’s terms of service?

What artwork is acceptable to upload?

The artwork you post must be your own creation. Do not post the work of other people. Instead, please encourage them to post it.

It must be directly related to the game you are associating it with. Random gifs and unrelated imagery will be removed.

Note: Respect your fellow community members by not posting any inappropriate artwork, including but not limited to, racism, sexual content or nudity, or gore. This work and any copyright or stolen material should be reported and will be removed.