Disgaea is a pretty big "multiplat" to get in my opinion at this point, not due to popularity (Because it's still a semi-niche game), but because the only other platforms its touched is PC, and that's the older versions, and the first one was on the DS.
Disgaea 5 is the most recent, and from 3 on (Since 2 is hitting the PC at the end of the month), they're Sony exclusives.