The Steam version is the definitive edition that includes content form Disgaea 2: Cursed Memories on PlayStation 2 and Disgaea 2: Dark Hero Days on PSP.
NIS America announced plans to bring Disgaea 2 PC to Steam, with the Windows OS, OS X, and Steam OS launch set for January 30, 2017.
To mark the occasion, Adell, Rozalin, Zetta, and Pleinair from Disgaea 2 are now playable in Disgaea PC.