There's no real answer to this, but it is up there. Ask men's top 10 hardest put Demon's Souls at number 3. But the most common two games that make the list seem to be Battletoads and Ninja Gaiden.
Fromsoft, they made dark souls
demon's souls
Dark Souls 2
cheats to the hardest game ever
That's up to you...demon's souls
Demon's Soul is a role-playing video game. No mention has ever been made as to where the name originated, however it is somewhat descriptive of the nature of the game in which demons feast on human souls.
world hardest game
YES
Go to a hacked version
It matters what game you are playing. For example i play Wizard101 and so far the hardest boss to me is Jabberwock.
Download PWE PRO or CHEAT ENGINE
Search 'the hardest video game boss ever' on YouTube to see who she is.