Sorry for the bad news but play-asia.com doesn't have N3, enchant arm, oblivion, and battlefield 2 as region free they just have english for some reason
Here's a list of region free titles
Saints Row
Table Tennis
MotoGp 06
Hitman Blood Money
X-Men
Tomb Raider Legend
Far Cry
Quake 4
GRAW
COD 2...