Interesting lol. That seems quite suspicious.

Well he also made this, which also isn't his to begin with

https://steamhost.cn/app/1103210/We_Become_What_We_Behold_FanMade_Port/

Originally posted by Mismatch Studio:

This games was created and originally published by Nicky Case (this is not an official port from him). You can find the original web version at this link:
https://ncase.itch.io/wbwwb

That is in the description by the way. From what I gather the original creator has put the original on public domain so in this instance it is actually allowed. He's not really happy when he first found out though.

https://twitter.com/ncasenmare/status/1148690638357106694

Whether this also falls under that criteria I don't know. Haven't found the original author's social media links yet and the discussion boards aren't helping with that either so I'd say this is a 50/50.

Yeah, I looked into the dev after I saw the Sentinel curation entry for We Become What We Behold. At least, aside of these two, Mismatch's other games on Steam seems to be their own work.