You people are all absurd for not mentioning Demons Souls. It competes for best game of all time in my book. For multi-platform, Assassin's Creed 2 is great. Darksiders or Dante's Inferno are fun as well. Ninja Gaiden Sigma 1 or 2. White Knight Chronicles is pretty fun too.

Those are just some to add to the list.

THE JACKEL