After taking a breather from dominating Japan's sales charts, Nintendo's Wii Party continues to party hard at the top of the list. Wii Party could be a great game, so why shouldn't it sell really well?

Well, it didn't have much strong competition this week, with PSP role-playing game Fate/Extra coming closest to threatening Wii Party's first place finish. The rest of the stuff is purely Japanese fare, with the exception of Ninety Nine Nights II. It debuted unimpressively in 17th place. Not surprising for an Xbox 360 game, but surely not good news for publisher Konami.

Games like the latest Inazuma Eleven, Fire Emblem and Super Mario Galaxy 2 continue to sell well overseas. To see how your favorite Japanese train simulator or portable game show performed, read on.

These are the bestselling games in Japan, according to Media Create, for the week of July 19 to 25.

01. Wii Party (Wii) - 99,000 / 446,000
02. Fate/Extra (PSP) - 72,000 / NEW
03. Inazuma Eleven 3: Sekai e no Chousen!! Bomber / Spark (DS) - 44,000 / 693,000
04. Fire Emblem: Shin Monshou no Nazo Hikari to Kage no Eiyuu (DS) - 39,000 / 176,000
05. Dragon Quest Monsters: Battle Road Victory (Wii) - 36,000 / 172,000
06. Jikkyou Powerful Pro Baseball 2010 (PSP) - 29,000 / 81,000
07. Jikkyou Powerful Pro Baseball 2010 (PS3) - 28,000 / 148,000
08. Super Mario Galaxy 2 (Wii) - 21,000 / 714,000
09. Last Ranker (PSP) - 21,000 / 81,000
10. Katekyoo Hitman Reborn! DS Flame Rumble XX - Kessen! Shin 6 Chouka (DS) - 20,000 / NEW

Much more after the break.. read on.

11. Quiz! Hexagon II (DS)
12. Taiko no Tatsujin DS: Dororon! Youkai Daikessen!! (DS)
13. Bokujou Monogatari: Futago no Mura (DS)
14. White Knight Chronicles 2 (PS3)
15. Tomodachi Collection (DS)
16. Trick x Logic: Season 1 (PSP)
17. Ninety Nine Nights II (Xbox 360)
18. Egokoro Kyoushitsu DS (DS)
19. Momotarou Dentetsu Tag Match: Yuujou - Doryoku - Shouri no Maki! (PSP)
20. TV Anime: Fairy Tale Gekitou! Madoushi Kessen (DS)
21. Wii Fit Plus (Wii)
22. New Super Mario Bros. Wii (Wii)
23. Ken to Mahou to Gakuen Mono. 2G (PS3)
24. Digimon Story: Lost Evolution (DS)
25. Monster Hunter Portable 2nd G (The Best) (PSP)
26. Mario Kart Wii (Wii)
27. World Soccer Winning Eleven 2010: Aoki Samurai no Chousen (PSP)
28. Tokimeki Memorial Girl's Side 3rd Story (DS)
29. Odoru Daisousasen The Game: Sensuikan ni Sennyuu Seyo! (DS)
30. Densha de Go! Tokubetsu-hen: Fukkatsu Shouwa no Yamatesen (DS)

via Kotaku, thanks.

Here are the numbers for the Japanese Hardware Charts (19th - 25th July 2010, courtesy Media Create), and it seems that despite a #1 victory in the software Top 10, Nintendo Wii sakles are still slowing week-on-week. The drop in units for the company's home console and DSi LL handheld are offset by sales boosts for the DSi and DS Lite.

1. PSP – 28,747 (26,786)
2. DSi LL – 24,189 (25,884)
3. Wii – 21,092 (22,239)
4. PS3 – 19,420 (19,473)
5. DSi – 18,202 (16,318)
6. Xbox 360 – 6,056 (5,936)
7. DS Lite – 5,059 (4,895)
8. PS2 – 1,475 (1,507)
9. PSP go – 831 (1,155)

It's a similar story for Sony, where the PlayStation Portable is seeing a lift in sales compared to the PS3. With the gap between the PS3 and the Wii getting closer, Sony needs to be bringing out some AAA titles to better take advantage of the situation. On the other side of the handheld chart, the PSP Go seems to be back into sub-1000 units territory. Can it hold out much longer?

The Xbox 360 sees a nice, if subtle, lift in sales – if you're looking for a reason as to why this is happening, it's likely to do with the new release of Ninety Nine Nights II, which currently sits at #17 in the Japanese Software Chart.