Ah yes, another Captivity clone here to pop up, finish about one level of gameplay and then update once every 2 years.
I am pretty sure this WAS Captivity. If you bothered to check his past content, which is posted on Twitter. It was renamed to this, apparently.
Which would make sense. Considering it has very much the likeness to Captivity far too much to not be so, including the fly enemy seeming to be the exact same as Captivity ones.
Alternatively. It is not the same Creator, but someone who took up the abandoned work, that the OG Creator said OK to do so. There is no definite answer, but i lean towards to that the OG Creator came back, and continued his work, but with more ambition and different approach.
Take your pick.