The Japanese Media Create sales for December 18 to December 24 are out, and one company is more or less dominating the lists. Nine out of the top tn games this week are on Nintendo devices, and almost all of them are first party releases to boot. The tenth spot on the list is home to the first PlayStation 4 title for the week, The IdolMaster: Stella Stage. Nintendo is definitely doing well in Japan!
While the list has a very heavy Nintendo leaning, there are some nice wins for Sony on the list. Okami HD made the cut despite only having three days of sales. The PlayStation 4 port is #18 on the list, selling over 16k copies. Earth Defense Force 5 and the already mentioned The IdolMaster: Stella Stage also made it on the list.
Here are the top 20 retail games for December 18 to December 24, along with system sales for the week. Items in bold are new releases: Games (Lifetime)

[NSW] Super Mario Odyssey (Bundle Version Included) (Nintendo, 10/27/17) ? 209,630 (1,292,281)
[3DS] Yo-kai Watch Busters 2: Treasure Legend Banbaraya ? Sword / Magnmum (Level-5, 12/16/17) ? 184,739 (393,279)
[3DS] Pokemon Ultra Sun / Ultra Moon (Nintendo, 11/17/17) ? 176,789 (1,345,962)
[NSW] Splatoon 2 (Bundle Version Included) (Nintendo, 07/21/17) ? 137,607 (1,668,466)
[NSW] Mario Kart 8 Deluxe (Nintendo, 04,28,17) ? 100,205 (1,045,438)
[3DS] Kirby: Battle Royale (Nintendo, 11/30/17) ? 42,796 (115,324)
[NSW] The Legend of Zelda: Breath of the Wild (Limited Edition Included) (Nin...