Bioshock is one of my favourite games of all time. I have been following this YouTube channel for a while and there are some cool videos, but this is one of the coolest for sure. Bioshock was released back in 2007 and I still think it looks quite good. 98Demake has released a video that shows that Bioshock might have looked like if it had of been released back in 98 or in other words, back on the Playstation 1.
I have no idea how these videos are made and whether it is an actual playable game made in Unity or something or if it is just all produced in some video editing software as if it were a flash animation (I am sure those are dead now) or something.