Just to answer ramz's question. Kicker's first, depends on the type of mod, if it's hardmod, all region can play.

If softmod (Answering your question here):
1)Only if the games' region are Korea

2)Depends on what you mean by disc games, and the state whether you have CIOSCORP or not.

2.1)If it's retail disc games and no CIOSCORP (If got CIOSCORP, then your Wii virtually won't play originals), then only games coming from that region can play.

2.2)Itu...... lanun punya, semua tak boleh kalau takde CIOSCORP. Kalau ada, boleh.

Or a modchip, never forget them old things.