Why unity game do not look like that?
Yes It's made in unity using only free assets (book of death environment), and it works even works on i5 7th, geforce 940m, 8ram.
So why unity games do not look like this, I think it's because games with bad graphics are easier to make, it works only with the newest one witch mean a loot of games can't use it. So we need to wait for graphic like this in unity.