Note which games are officially or unofficially on Steam

[Summertime]

Since the games are open source, it does make it easier for others to upload the game "without having ownership"

Hedgewars for example is unofficial but sanctioned https://www.hedgewars.org/node/9293

[Poussinou]

Good idea.

Are you aware of any other case like Hedgewars? I thought about completely removing this games that are not officially published and have no official approval from the original developers, as there is a risk of corrupted executable file or bad intentions behind.

[Poussinou]

So we have:

• Warzone 2100 that is uploaded on Steam without approval from developers
• Little Big Adventure 1 & 2 that are uploaded by the community only

As proposed by @rammba
We can try to create a distinction between official repositories which are developed by the original developer(s), and community made repositories. One idea can be to add separate indicator bellow the game, similar to the platform logo, in order to mark community games.

Community Steam uploads that are not at least "approved" by the developer (like Warzone 2100) should be removed.