Disgaea 3 - Playable by how much?

Until someone works on the input (probably the easiest to fix)

What exactly is wrong with the input again? (And do any easier loadable games exhibit issues with this?)

Arkedo 2 has the same issue at least. If you press right (or any other direction) it never registers actually releasing, so you keep going to the right with the cursor/character. But it does work if you hold down cross, circle, etc at the same time. But by themselves these only work sometimes, perhaps when pressing two buttons at once, not sure.

Basically, input is in general only registered sometimes, and most buttons only seem to work when held down together with other buttons.