Media Create 21-50 (from GAF; Hiska-kun in fact :P):
21./13. [WIU] Dragon Quest X: Rise of the Five Tribes Online # (Square Enix) {2013.03.30} (¥6.980)
22./17. [WIU] Game & Wario (Nintendo) {2013.03.28} (¥4.935)
23./20. [3DS] Taiko no Tatsujin: Chibi Dragon to Fushigi na Orb (Bandai Namco Games) {2012.07.12} (¥5.040)
24./18. [PSV] One Piece: Pirate Warriors 2 (Bandai Namco Games) {2013.03.20} (¥7.140)
25./14. [PSP] Fate/Extra CCC # (Marvelous AQL) {2013.03.28} (¥6.279)
26./19. [3DS] Professor Layton and the Legacy of Civilization A (Level 5) {2013.02.28} (¥5.500)
27./23. [3DS] Dragon Quest VII: Fighters of Eden (Square Enix) {2013.02.07} (¥6.090)
28./00. [PS3] Assassin's Creed: Revelations - Special Edition (Ubisoft) {2013.04.18} (¥3.990)
29./21. [PSP] Dungeon Travelers 2: Ouritsu Tokoshan to Mamono no Fuuin # (Aqua Plus) {2013.03.28} (¥6.090)
30./33. [NDS] Pokèmon Black 2 / White 2 (Pokèmon Co.) {2012.06.23} (¥4.800)
31./00. [PSP] Tsukikage no Kusari: Sakuran Paranoia (Takuyo) {2013.04.18} (¥7.140)
32./24. [PS3] Far Cry 3 (Ubisoft) {2013.03.07} (¥7.770)
33./30. [WIU] New Super Mario Bros. U (Nintendo) {2012.12.08} (¥5.985)
34./36. [3DS] Super Mario 3D Land # (Nintendo) {2011.11.03} (¥4.800)
35./27. [PS3] Hatsune Miku: Project Diva f (Sega) {2013.03.07} (¥7.329)
36./42. [PS3] Call of Duty: Black Ops II - Dubbed Edition (Square Enix) {2012.12.20} (¥7.980)
37./26. [3DS] Super Robot Wars UX # (Bandai Namco Games) {2013.03.14} (¥7.140)
38./32. [PSP] Uta no Prince-Sama: All Star # (Broccoli) {2013.03.07} (¥6.090)
39./29. [PS3] Dynasty Warriors 8 # (Koei Tecmo) {2013.02.28} (¥7.560)
40./37. [PSV] Senran Kagura Shinovi Versus: Otome Shoujotachi no Shoumei # (Marvelous AQL) {2013.02.28} (¥6.980)
41./22. [3DS] Dragon Ball Heroes: Ultimate Mission (Bandai Namco Games) {2013.02.28} (¥5.800)
42./41. [PSV] Phantasy Star Online 2: Special Package (Sega) {2013.02.28} (¥5.229)
43./35. [3DS] Doraemon: Nobita to Himitsu Dougu Hakubutsukan (FuRyu) {2013.03.07} (¥5.229)
44./38. [3DS] Paper Mario: Sticker Star (Nintendo) {2012.12.06} (¥4.800)
45./28. [PS3] Disgaea D2 # (Nippon Ichi Software) {2013.03.20} (¥7.140)
46./47. [WII] Dragon Quest X: Mezameshi Itsutsu no Shuzoku Online # (Square Enix) {2012.08.02} (¥6.980)
47./00. [PSV] Slotter Mania V: Zettai Shouji II (Dorart) {2013.04.18} (¥6.090)
48./34. [PSV] Pro Baseball Spirits 2013 (Konami) {2013.03.20} (¥7.980)
49./31. [3DS] Pretty Rhythm: My Deco Rainbow Wedding (Takara Tomy) {2013.03.20} (¥6.279)
50./00. [3DS] Puyo Puyo!! Puyo Puyo 20th Anniversary (Special Price) (Sega) {2012.12.13} (¥2.940)
If "Slotter Mania V" get's added to the database and counted in the Japan sales this week, I will be both surprised and impressed.