The video is actually worth watching, this is probably one of the most blatant video game fundraising scams that have ever been attempted, and yet they somehow magically get YC backing.
The people involved have ZERO background experience in making games at all. The demo videos are just free game assets used in every single game dev tutorial.
I'm not sure what this says about the YC approval process... the entire thing is just absolutely hilarious.
https://www.ycombinator.com/companies/dreamworld