Unfortunately not.
The screen in the machine using the viewer freezes relatively often.
I think that with a game like Yu-Gi-Oh, Mario Golf or Advance Wars where the player input has not necessary to be instantly, the alternative could work. However for games like Mario Bros, FIFA or NFL Madden where the player must react instantly it's not recommended.
Also, I don't think card-type games are not recommended due that both players will see both hands.
EDIT: I was refering that the application VNC Viewer is the one that freezes, not the machine.
I think that with a game like Yu-Gi-Oh, Mario Golf or Advance Wars where the player input has not necessary to be instantly, the alternative could work. However for games like Mario Bros, FIFA or NFL Madden where the player must react instantly it's not recommended.
Also, I don't think card-type games are not recommended due that both players will see both hands.
EDIT: I was refering that the application VNC Viewer is the one that freezes, not the machine.