Bruce Tomlin, on Sat Dec 24, 2011 9:07 PM, said:
nathanallan, on Wed Dec 21, 2011 10:30 PM, said:
I think most of the MD games will play on a Genny, with the cart port mod; afaik there was no region locking, as S. American MD games will also play with no problem on the Genesis. There are S. American titles that were never released anywhere else, great to have Mercado Libre out there, and many of them are super cheap to buy, shipping is the issue.
Region locking was only done by cartridge shape.
Individual games could check the region, but it only had US/JP and 50/60 region options. Some Japanese games would change menus between Japanese and English based on the input, and US Gauntlet IV would refuse to run on a Japanese unit.
The Sega CD is another matter. Not only does its ROM check the console region, but the region locking on discs was done with special code that was actually a different size for each region.
Sorry, but I have some US games that will not play in Japanese mode and vice versa. It comes up with the wonderful message, "This game developed only for blah blah blah". After a quick check of a handful of games I found these:
Asian that won't play in US mode:
Shining Force II (JPN)
Light Crusader (KOREA)
The Story of Thor (KOREA)
US that won't play in JPN mode:
Soldiers of Fortune
Tiny Toon Adventures Buster's Hidden Treasure (No error message but sits at Konami logo)
As far as S. American games go, I have no idea.