While Nexon Korea and Nexon America may appear to release the same gachapon, the contents and chances often differ. The name of the gacha, the images, the theme, and the main new items are most often the same, but the rest of the items inside can vary and the chances often vary wildly.
The "Checkmate Melody Box" (체크메이트 멜로디 박스) is the example used here.
Nexon America probability list: http://mabinogi.nexon.net/News/Announcements/1/00JF1
Nexon Korea probability list: http://mabinogi.nexon.com/ItemShop/prob.asp
Since Nexon Korea only displays the chances for their last ~7 gachapon or so (and thus the Nexon Korea link will not have this info in the future), I've made this page to save the outputs for comparison.
Here's some key items to get a general idea of the differences.
| Item Name | NA Chance | KR Chance |
| Ancient Bishop Support Puppet (Reforging: Rank 1) | 0.08% | 0.003% |
| Bishop Support Puppet (Reforging: Rank 1) | 0.12% | 0.007% |
| Checkmate Marble Dark-slate Wings | 0.14% | 0.010% |
| Checkmate Black Halo | 0.14% | 0.034% |
| Special Checkmate King's Suit | 0.14% | 0.034% |
| Special Checkmate Queen's Dress | 0.14% | 0.034% |
| Checkmate King's Suit | 0.17% | 0.103% |
| Checkmate Queen's Dress | 0.17% | 0.103% |
| Checkmate King's Wig | 0.14% | 0.051% |
| Checkmate King's Crowned Wig | 0.19% | 0.120% |
| Checkmate Queen's Wig | 0.14% | 0.051% |
| Checkmate Queen's Crowned Wig | 0.19% | 0.120% |
Here's the saved copy of the Korean probability list.
Korea
And here's the saved copy of the NA list.
America