Context: <a href="http://itch.io/" rel="nofollow">http://itch.io/</a> is a place for publishing indie games and other creative stuff. There is no greenlight process like on Steam, people can share content very easily without gatekeepers.<p>(Disclosure: I know the devs pretty well but I'm submitting because I think it's interesting content for the HN audience)<p>They recently released a Steam-like app for browsing, installing & updating games. There's an awful lot of interesting stuff being done like <a href="https://itch.io/docs/butler/" rel="nofollow">https://itch.io/docs/butler/</a> (CLI tool for efficiently patching games with diffing for both upload & download).<p>The latest feature they added is experimental sandboxing which allows transparently running the games you download from itch.io as a separate restricted user / in a jail. The submission link details the research done to make it work.<p>More info here: <a href="https://itch.io/docs/itch/using/sandbox.html" rel="nofollow">https://itch.io/docs/itch/using/sandbox.html</a> and <a href="https://github.com/itchio/itch/releases/tag/v18.0.0" rel="nofollow">https://github.com/itchio/itch/releases/tag/v18.0.0</a>