Posted 02 September 2012 - 22:21
As has been said it really does depend hugely on what your tastes are.
Forza 4 is a great simulation racer that with all the challenges that renew every so often meaning you've always got something to do.
For ARPG's: Skyrim is the daddy but if you want a JPRG there's a lot of options, Final Fantasy XIII or for something slightly different, Lost Odyssey is amazing but also very long. You could also try Blue Dragon for something REALLY off the wall, bats**t crazy.
Shooters: Well you've got a lot of choice, depends on whether you like Call Of Duty or Battlefield, the latter is probably better to my tastes but you might prefer CoD.
Free Roam games, Crackdown (and 2) was always a good laugh, or you've got the new Sleeping Dogs, or Just Cause 2 (JC2 lasted me a HUGE amount of time and I still haven't really completed it)
Or you could go sport games: Tiger Woods (I prefer 12 over 13), Fifa if you like football (or soccer?), and 11 is probably my favourite. Or you could go American Football and choose Madden.
For platformers you're a little more limited, but you could do worse than choosing Prince Of Persia The Forgotten Sands, or the Prince Of Persia that came out before it. Both good games, eminently enjoyable but could be called short.
You'll still have to tell us what you want genrewise though.